Yeastar P-Series with BRI: verified platform overview

Yeastar positions the P-Series Appliance Edition as an on-premises IP PBX and unified communications platform for business. Current models include P520, P550, P560 and P570, with different user capacities, concurrent-call limits and telephony-interface expansion options. The product family supports SIP trunks and can also support traditional connectivity such as PSTN, BRI and, on selected models, E1/T1/J1 through modular hardware. This makes the P-Series relevant to organizations that are modernizing communications but still need interoperability with established telephony services.

The B2 module is the key component for BRI connectivity. Yeastar documents it as a two-port NT/TE BRI module. For P560 and P570, the EX08 expansion board provides module slots and additional RJ11 telephony interfaces, allowing more flexible combinations of BRI, FXO, FXS or supported cellular modules. The exact module population depends on the appliance and the required line mix, so procurement should be based on a channel plan rather than only the model name.

The same P-Series platform can support IP phones, Linkus UC clients, call routing, IVR, voicemail, call queues, operator workflows, remote working and other unified communications functions. That combination is useful when a business wants to keep a familiar external BRI service while moving internal users toward SIP endpoints, desktop clients, mobile clients and more centralized administration.

Model selection and BRI capacity planning

Published maximums describe hardware capability, not a guarantee that every possible combination is appropriate for every site. A correct quotation should map each BRI port, SIP trunk, analog device, extension and expected simultaneous call to a real operational requirement. For example, a company with 45 users may still need a larger platform if call concurrency, recording, branch integration or future expansion is unusually high.

Business outcomes beyond the BRI port

The value of a Yeastar IP PBX with BRI is not simply that it terminates an ISDN circuit. The larger benefit is that the BRI line can become one trunk option inside a software-controlled communications platform. Incoming calls can be directed to IVR menus, departments, queues or individual users. Staff can use desk phones or compatible UC clients. Administrators gain a central place to define business hours, extension behavior and routing logic. As the company changes, the communications plan can evolve without replacing every handset or trunk at the same time.

For procurement teams, this changes the buying conversation. Instead of asking only how many BRI ports are required, it becomes important to ask how customers reach the business, which teams answer calls, whether mobile users need extension access, whether multiple branches share numbering or reception functions, and what should happen during carrier or internet disruption. The PBX should be sized around the process, not around a single connector.

Related FourTeck resources for a complete voice solution

A PBX works best as part of a prepared network and communications environment. Review FourTeck Tanzania business technology solutions for the wider local portfolio covering IP telephony, switching, Wi-Fi, firewalls, structured cabling and supporting infrastructure. For regional procurement or multi-country projects, the FourTeck Uganda technology portfolio and FourTeck Kenya technology portfolio provide relevant regional paths. Organizations planning broader Africa deployments can also review FourTeck Africa solutions. For specialist IP PBX information and regional telephony projects, FourTeck IP PBX solutions offers another focused reference point.

Yeastar IP PBX with BRI Tanzania

For businesses in Tanzania, a Yeastar IP PBX with BRI can be a practical choice when established ISDN connectivity must coexist with a more modern SIP-based communications environment. Many organizations modernize telephony in stages. A head office may still depend on a known BRI circuit for inbound numbers while new departments adopt IP phones, branch sites use SIP trunks and mobile staff rely on software clients. The modular Yeastar P-Series architecture supports this kind of mixed environment because the BRI interface is an optional telephony component rather than the sole basis of the phone system.

A Tanzania deployment should begin with an inventory. Count extensions by role rather than by desk only: reception, management, finance, sales, support, warehouse, security, meeting rooms, remote staff and common areas may all need different endpoint behavior. Then estimate simultaneous calls during the busiest business periods. Confirm how many BRI circuits exist, which numbers they carry, whether they must be retained, and what signalling information the carrier provides. If SIP trunks will be introduced, document which routes should use SIP and which should remain on BRI during the migration phase.

Network readiness is equally important. IP telephony depends on stable switching, sensible VLAN design, PoE capacity for phones, appropriate QoS and reliable power for the PBX, switches, router and firewall. In offices where short power interruptions are common, placing the communications core on correctly sized UPS protection can help avoid unnecessary service disruption. Where branch links or internet services vary in quality, call routing and failover policies should be planned according to available carrier services rather than assumed.

For a quotation, provide current BRI line details, expected extension count, preferred IP phone types, remote-user requirements, any analog devices, call recording needs, office hours, IVR expectations and future growth. This produces a more accurate recommendation than requesting a PBX only by port count. FourTeck can then align the Yeastar appliance, B2 modules, expansion hardware, endpoints and network components with the actual operating environment.

Yeastar IP PBX with BRI Dar es Salaam

Dar es Salaam organizations often operate in communication-intensive environments where reception, sales, logistics, customer care and management teams need dependable call handling. A Yeastar IP PBX with BRI can support offices that want to preserve existing digital lines while introducing modern extension management and SIP-based services. This is particularly useful when a business does not want to make a disruptive all-at-once change to its external telephony service.

For an office tower, commercial facility, logistics company, professional practice or multi-department workplace, the design should focus on call flows first. Identify the primary published numbers, which teams answer them and how calls should route during busy periods, lunch breaks, after-hours operation and staff absence. IVR menus and queues can help distribute calls, but they should remain simple enough for customers to reach the right person quickly. Reception users may need more advanced desk phones or operator features than general office staff.

The BRI requirement should be documented separately from the internal extension requirement. Two BRI ports are supplied by each B2 module, while the P-Series appliance and expansion design determine how many interfaces can be fitted overall. A Dar es Salaam office that plans significant growth should leave physical and call-capacity headroom rather than selecting the smallest possible appliance. If the organization expects to add a second office, SIP trunk, call center function or more remote users, those requirements should be considered during initial sizing.

The LAN should be reviewed for PoE availability, uplink capacity and voice segmentation. If the same access switches carry PCs, cameras, wireless access points and phones, VLAN and QoS planning can reduce congestion and simplify support. A clear documentation pack should include extension numbering, trunk settings, device assignments, network addresses and administrator responsibilities. This makes future changes easier and reduces dependency on undocumented configuration.

Yeastar IP PBX with BRI Mwanza

Businesses in Mwanza considering a Yeastar IP PBX with BRI should evaluate both existing telecom services and the network that will carry new IP voice traffic. A company may have a stable BRI service that remains important for published business numbers while also needing better internal mobility, department routing or branch connectivity. The Yeastar approach allows these requirements to coexist inside one platform, which can make migration planning more controlled.

For trading, services, hospitality, healthcare, education and distribution environments, the practical questions are usually about who needs to answer calls and from where. Some users may be fixed at desks, while supervisors and field-oriented staff may move between locations. A well-planned PBX can provide extension-based communication and consistent inbound routing without forcing every user into the same device type. Linkus and supported SIP endpoints provide options for different work styles, subject to the selected feature plan and deployment design.

BRI sizing should be based on active channels and existing line utilization, not only on the number of telephone numbers. The organization should gather carrier information, confirm signalling details and record whether the BRI service is expected to remain long term or serve as part of a migration period. If future SIP trunks are planned, routing policies can be designed so the business can gradually shift traffic while retaining the legacy connection until operational confidence is established.

For sites where technical support is coordinated from another city or central IT team, secure remote administration and good documentation become especially important. Network diagrams, extension lists, trunk details, backup procedures and change records should be maintained from the beginning. The result is a PBX deployment that is easier to troubleshoot and expand, rather than a one-time installation whose settings are difficult to reconstruct later.

Yeastar IP PBX with BRI Arusha

Arusha businesses often serve a mix of local and international customers, partners and field teams, making reliable call handling an important part of daily operations. A Yeastar IP PBX with BRI can provide a structured communications platform for organizations that retain ISDN BRI while adding SIP phones, unified communications and more flexible routing. The goal is not merely to replace an older PBX; it is to create a system that supports how the organization actually communicates.

Hospitality, tourism, professional services, NGOs, education and commercial organizations can each have different call-flow priorities. A hotel may prioritize reception, reservations and after-hours routing, while a professional office may emphasize direct extensions, voicemail and mobile availability. An NGO or project office may need straightforward administration for changing staff and temporary teams. Yeastar’s modular hardware and software-based configuration can support these varied patterns when the appliance and feature plan are selected correctly.

Existing BRI services should be audited before hardware is ordered. Confirm circuit count, carrier handoff, numbering, signalling parameters and any devices currently connected through the old PBX. If analog phones, fax machines or other legacy endpoints remain necessary, include them in the migration design so the correct FXS, FXO or gateway approach can be evaluated. Avoid assuming that every legacy device should connect directly to the new PBX without checking interface requirements.

The network side deserves the same care. Voice traffic should have predictable access to the PBX and internet-based services, and IP phones should receive sufficient PoE power. Where guest Wi-Fi, CCTV and office data share infrastructure, segmentation helps reduce operational confusion. A good Arusha deployment therefore combines telephony design, LAN readiness, power continuity and documentation rather than treating the PBX as an isolated appliance.

Yeastar IP PBX with BRI Dodoma

Organizations in Dodoma looking for a Yeastar IP PBX with BRI may be dealing with a mixture of established telecom services and newer digital workplace requirements. The P-Series gives procurement teams a route to keep BRI where it remains operationally important while adding SIP-based internal communications, centralized call handling and remote-user options. This hybrid capability can be particularly valuable when changes must be introduced in planned stages.

Public-sector offices, professional services, educational organizations, commercial businesses and project teams should begin by mapping call ownership. Document main numbers, departmental numbers, extensions, reception processes, escalation paths and after-hours behavior. Determine which calls require queues, which should ring groups of users, and which need direct extension access. This avoids creating an overly complicated IVR while still improving how callers reach the correct team.

For BRI integration, gather the carrier’s signalling information before configuration. Yeastar’s P-Series documentation specifically identifies signalling, switch type and signalling role as prerequisites for a BRI trunk. The physical BRI connection must also be associated with the correct B2 module port. These details should be captured in handover documentation so future administrators can understand both the physical and logical trunk setup.

Capacity planning should include future staffing and possible branch growth. Choosing a PBX based only on today’s extension count can create an early upgrade if the organization later adds call recording, additional trunks or remote teams. A better request for quotation includes user count, concurrent-call estimate, BRI requirements, SIP plans, endpoint types and expected growth over the next few years. This gives suppliers and technical teams enough context to recommend an appropriate appliance and module configuration.

Yeastar IP PBX with BRI UAE

For UAE organizations and regional groups with Tanzania operations, a Yeastar IP PBX with BRI can support sites that still require ISDN connectivity while standardizing internal telephony around SIP and unified communications. The modular architecture is useful for multi-country businesses because each site can be sized according to local carrier interfaces while still following a common extension, routing and administration framework.

A regional deployment should avoid assuming that the same carrier service is available in every country. BRI availability, numbering, SIP trunk options and regulatory conditions may differ. The PBX design should therefore separate the common corporate requirements from the local trunk requirements. Common elements can include extension ranges, user roles, call-flow conventions, security standards and endpoint models, while local elements include the specific BRI or SIP service and carrier configuration.

For organizations coordinating between UAE headquarters and Tanzania branches, SIP-based inter-site communication can reduce dependence on public network calls for internal conversations, provided the WAN design and security model support it. The BRI circuit can remain available for local inbound or outbound traffic while the company gradually introduces a more integrated multi-site architecture. This kind of hybrid design should be documented carefully so routing remains predictable and emergency or business-critical calling policies are not ambiguous.

Procurement teams should also consider support responsibility. Define which team controls PBX administration, who manages carrier accounts, how configuration backups are stored, and what escalation path is used if a branch loses service. Standardized naming, extension templates and configuration records can make regional support much more efficient than independently managed telephone systems at each office.

Yeastar IP PBX with BRI Uganda

Uganda-based businesses evaluating Yeastar IP PBX with BRI may need to preserve established digital lines while moving toward SIP, IP phones and unified communications. The same planning principles apply as in Tanzania: confirm what the carrier actually provides, size the PBX for real call concurrency, and choose telephony modules according to the required interfaces. A B2 module provides two BRI ports, but the complete system design depends on the selected P-Series appliance.

For organizations operating across Uganda and Tanzania, common extension conventions and user policies can simplify collaboration. Branches can retain local external connectivity appropriate to each market while sharing a consistent PBX approach. If the WAN and security design permit inter-site SIP communication, internal calling can be structured around extension dialing rather than public telephone numbers. This should be implemented with clear routing rules and documented failover behavior.

Businesses should also plan for remote workers and mobile managers. A modern PBX can extend communication beyond the desk, but remote access should be implemented through supported secure methods rather than by exposing services unnecessarily to the public internet. Firewall configuration, access control, user credentials and software maintenance all contribute to the security of the telephony environment.

A quotation should list all current trunks, existing PBX interfaces, analog devices, IP phones, planned new users and any branch-to-branch requirements. It is also useful to describe what is not working well today, such as missed calls, limited reporting, difficult call transfers or lack of mobility. The proposed Yeastar configuration can then be designed to solve specific operational issues rather than simply reproducing the limitations of the old phone system.

Yeastar IP PBX with BRI Kampala

In Kampala, organizations with busy reception desks and customer-facing teams can benefit from a Yeastar IP PBX with BRI when they need modern call management without immediately abandoning existing digital trunk services. The PBX can treat BRI as one external route while internal users gain features such as extensions, ring groups, queues, voicemail and UC clients according to the configured plan.

A Kampala office should pay particular attention to call concurrency and departmental traffic. A company with a modest number of employees can still need significant simultaneous-call capacity if sales, support or reservations teams spend much of the day on the phone. Conversely, a larger administrative office may require many extensions but relatively fewer concurrent external calls. This is why user count and channel count should be evaluated separately.

Where multiple floors or buildings are involved, the LAN design becomes part of the telephony project. PoE switching can simplify endpoint power, while VLANs can separate voice from other traffic. Uplink capacity, fiber connections between floors and UPS protection for core switches can all affect reliability. The PBX should be installed in a controlled location with appropriate network and power access rather than placed wherever a telephone cable happens to terminate.

If the organization expects to transition from BRI to SIP over time, the project can include a migration roadmap. Define which numbers and call types remain on BRI initially, when SIP trunks will be tested, and how fallback will work during the transition. A staged plan can reduce risk and give staff time to learn the new call-handling workflow before the legacy service is changed.

Yeastar IP PBX with BRI Arua

For organizations in Arua, a Yeastar IP PBX with BRI can provide a structured path from traditional telephony toward IP-based communications where carrier and network conditions support the required services. The system can keep BRI connectivity through the B2 module while introducing SIP endpoints and software-based call management, giving businesses more flexibility than a fixed-function legacy PBX.

The key design question is resilience. If the site depends on voice for coordination, customer service or operational dispatch, identify the points that could interrupt service: power, carrier line, LAN switch, internet connection or endpoint power. The appropriate mitigation depends on business criticality and available services. UPS protection, documented fallback routes and spare endpoint planning can be more valuable than adding unnecessary features that users do not need.

Arua deployments may also benefit from centralized management by a regional IT team. Standard extension patterns, configuration backups and clear device labeling can simplify support when specialist staff are not permanently present on-site. Remote administration should use secure supported access methods, and configuration changes should be recorded so local and central teams understand what has been modified.

Before buying BRI modules, verify the exact carrier handoff and signalling. The module alone does not guarantee compatibility with every line configuration. Procurement should include the carrier information, required number of BRI ports, extension count, phone types and any analog devices. This ensures the proposed system includes all necessary interfaces and avoids discovering a missing module or cable during installation.

Yeastar IP PBX with BRI Mbarara

Businesses in Mbarara can use a Yeastar IP PBX with BRI to modernize internal communications while retaining established ISDN services during a controlled transition. This approach can be useful for companies that want better extension management, customer call routing and mobile-user options but prefer to avoid an immediate change to every external telephone service.

A practical design begins with departments and workflows. Reception, accounts, sales, operations and management may each need different routing. Some users need direct inward dialing, some need queue membership, and others only need internal extensions. Mapping these roles before configuration leads to a simpler PBX that reflects how the business operates rather than a collection of features enabled without purpose.

If branch connectivity is required, decide whether the PBX will serve only the local office or participate in a wider company voice network. Inter-site calling can be designed over IP, but the WAN, firewall and security configuration must support it. Local BRI can remain available for public calling while branch-to-branch communication follows separate routes. This gives the organization flexibility but also makes documentation essential.

For procurement, include growth assumptions. A business expecting new staff, an additional branch or a customer-service function should choose a model with enough user and call capacity to absorb the change. P560 and P570 provide greater expansion options than smaller platforms, including EX08 boards for telephony modules. Selecting headroom deliberately can be more economical than replacing an undersized system soon after deployment.

Yeastar IP PBX with BRI Gulu

A Yeastar IP PBX with BRI in Gulu can serve organizations that need a dependable on-premises communications platform with both modern IP features and legacy digital-line support. The B2 module provides the physical BRI interface, while the P-Series software controls extensions, routing and user services. This separation allows the business to modernize its internal telephony independently from the timeline for changing external carrier services.

For offices with limited on-site IT resources, simplicity should be a design objective. Use a clear extension plan, avoid unnecessary routing complexity, label ports and devices, and maintain current backups. User training should cover transfer, hold, voicemail and any UC client functions that are actually deployed. A system that staff understand will usually deliver more operational value than one with many unused features.

Network planning should include the switches that power or connect IP phones. If PoE is used, check the total PoE budget rather than only the number of available ports. If voice shares the network with cameras and Wi-Fi, VLANs and suitable uplinks can help maintain predictable performance. Reliable power for the PBX and switching infrastructure should be considered according to the business’s tolerance for interruption.

BRI configuration requires accurate carrier parameters, and the physical layer must be functioning before software routing can work correctly. Keeping a record of signalling, switch type, role, numbers and port assignments makes future troubleshooting much faster. If the business later adopts SIP trunks, that same documentation provides a useful baseline for testing and comparing the new service.

Yeastar IP PBX with BRI Kenya

Kenyan organizations and regional businesses with offices in Tanzania can consider Yeastar IP PBX with BRI when legacy ISDN services remain part of the communications environment. A modular PBX allows each site to retain the interfaces it genuinely needs while standardizing user experience, extension planning and call-flow logic across the wider company.

A cross-border deployment should be designed around local carrier realities. One office may use BRI, another may be ready for SIP-only service, and a third may need additional analog interfaces. Yeastar’s modular approach can accommodate different combinations, but each location should have its own verified trunk specification. Corporate standards should focus on the parts that can be common: endpoint families, extension ranges, security practices, naming conventions and support procedures.

Organizations with customer service teams should quantify peak call demand. Number of employees alone does not determine the required PBX size. A smaller service desk can create more concurrent external calls than a much larger back-office team. The quotation should therefore distinguish total users, concurrent calls, BRI channels and SIP sessions. This helps avoid both undersizing and unnecessary overspending.

If internal calls between Kenya and Tanzania sites will travel over IP, network quality and security become essential. Site-to-site connectivity should be monitored, firewalls should permit only the required traffic, and routing should have clearly defined behavior when the inter-site path is unavailable. The local external trunk should remain usable according to the company’s continuity plan. Proper documentation turns a multi-site PBX environment into a manageable business system rather than a fragile collection of trunks.

Yeastar IP PBX with BRI Kuwait

For Kuwait-based businesses working with East African offices, Yeastar IP PBX with BRI can support a standardized communications architecture while allowing each country to use the external telephony service appropriate to its local market. BRI can remain available at sites where it is required, while SIP and UC functions create a more consistent internal user experience.

Regional IT teams should define a common baseline before hardware is purchased. This can include extension numbering, endpoint standards, administrator access rules, backup frequency, naming conventions and security expectations. Each site can then add the necessary telephony interfaces, such as BRI through B2 modules, without changing the core operational approach. This makes cross-site support and staff transfers easier.

Businesses should also evaluate whether the P-Series appliance needs additional capacity for future sites or call-center functions. P560 and P570 can be expanded with DSP modules for additional users and concurrent calls, while their expansion-board options support more flexible telephony interfaces. Capacity should be reserved intentionally; it should not be assumed that every published maximum is available in every module combination or feature scenario.

For quotation accuracy, share the local carrier specification, number of BRI ports, extension count, concurrent-call estimate, IP phone requirements and any integration needs. If the project spans Kuwait, Tanzania or other countries, list each site separately. This lets the solution design distinguish common equipment standards from country-specific carrier requirements and produces a cleaner deployment plan.

Yeastar IP PBX with BRI Ghana

Ghanaian businesses evaluating a Yeastar IP PBX with BRI can use the platform as part of a phased move from traditional digital telephony toward SIP and unified communications. The BRI interface remains available where needed, while internal users can benefit from IP endpoints, centralized routing and more flexible extension administration.

A well-planned deployment starts by separating current requirements from future objectives. Current requirements include existing trunk type, extension count, published numbers and critical call flows. Future objectives may include remote work, branch integration, additional departments, SIP migration or improved reporting. The selected P-Series model should have enough capacity and interface flexibility to support both categories without excessive unused hardware.

If BRI is only a transitional requirement, the system should be designed so it remains useful after the circuit is retired. This means choosing the PBX for its broader call-management and UC capabilities, not solely for the digital port. Once SIP trunks replace BRI, the same extension plan, phones and user workflows can remain, reducing the scope of later change.

Security and maintenance should be included from the start. Administrator accounts should be controlled, backups kept current and firmware managed according to supported release practices. Remote connectivity should use supported secure methods. When these operational tasks are assigned to named owners, the PBX remains easier to support throughout its lifecycle and avoids becoming an unmanaged appliance after installation.

Yeastar IP PBX with BRI Nigeria

Nigeria-based companies with multi-site operations can use a Yeastar IP PBX with BRI where traditional digital circuits still need to integrate with a modern communications platform. The P-Series can combine external trunk choices with internal SIP extensions, UC clients and software-controlled routing, allowing each office to modernize at a pace that matches its telecom environment.

Large organizations should pay close attention to simultaneous-call capacity and expansion design. The P570 is the highest-capacity appliance in the current lineup described here, supporting larger user counts, more concurrent calls and up to two expansion boards. Smaller offices may be better served by P520, P550 or P560. Model choice should reflect usage rather than corporate size alone; a compact customer-service center may need more call capacity than a larger administrative office.

For BRI, confirm signalling and physical handoff before installation. The B2 module supports two NT/TE BRI ports, but the number of required modules must be matched to real circuits and the appliance’s supported interface capacity. If the organization also has analog lines, fax devices or other telephony equipment, document them separately so the solution can include the correct FXS, FXO or gateway components.

For multi-country groups, central standards should cover configuration naming, security, backups and change control. Local teams can then manage country-specific trunks without creating completely different PBX environments. This balance between standardization and local flexibility can reduce support complexity and make future SIP migration or branch expansion easier to manage.

Yeastar IP PBX with BRI Seychelles

Organizations in Seychelles may consider a Yeastar IP PBX with BRI when they require compatibility with an existing digital line while introducing a more flexible IP-based communications platform. Hotels, service companies, offices and other customer-facing operations can benefit from structured call routing, extension management and unified communications while retaining established external connectivity during migration.

Hospitality and service environments often need clear separation between reception, reservations, administration and operational extensions. The PBX should be configured around these workflows rather than simply reproducing the old numbering plan. Ring groups, queues, voicemail and time-based routing can improve caller handling when used selectively. The objective is to make it easier for guests or customers to reach the correct team with fewer transfers.

BRI capacity should be checked against peak calling patterns and current carrier use. If the line carries critical published numbers, migration testing should include inbound and outbound calls, caller ID behavior, routing and failover expectations. Any future SIP trunk should be introduced through a controlled test plan rather than assumed to behave identically to the existing service.

Network and power planning are also important. IP phones rely on switches and, where used, PoE power. The PBX, firewall, router and core switches may require UPS support according to the organization’s continuity needs. Good documentation should identify every trunk, extension, device and administrator responsibility so future changes can be made confidently. This is especially useful where external technical support may be involved in maintaining the site.

Installation and migration checklist

Quotation checklist for Yeastar IP PBX with BRI

To receive a useful quotation, provide more than a product name. Include the number of users now and in the expected growth period, the approximate maximum simultaneous external calls, the number of BRI circuits or ports, carrier and signalling details, existing telephone numbers, the number and type of IP phones, any analog devices, remote-worker requirements, branch connections, call recording needs, reception workflow, queue requirements, preferred UC features and current network equipment. Also state whether the project is a new installation, replacement of an existing PBX or phased migration from BRI toward SIP.

This information allows the solution to be sized with the appropriate P-Series model, B2 modules, expansion boards where needed, endpoints and supporting network equipment. It also helps identify whether a separate BRI gateway would be more appropriate in a particular architecture. The objective is a configuration that can be supported and expanded, not simply the lowest-cost appliance that can be made to work on installation day.

Frequently asked questions

Important compatibility note

BRI services and signalling can differ by carrier and location. Always verify the actual ISDN handoff and signalling parameters before finalizing hardware. Published Yeastar capacities describe platform capability, while a complete project design must also consider the chosen feature plan, module population, network architecture and local telecom service.