Lower infrastructure complexity
Bring communications onto a planned network architecture.
Contáctanos Ahora
Unified Communications & IP Telephony
Connect every conversation with flexible IP Telephony solutions
Design, deploy, secure, and support business communications across voice, video, conferencing, mobility, and contact-center workflows.
Open-source options On-premises, cloud, hybrid or distributed Voice, video and conferencing Training and support
The foundation
A simpler way to connect your people
IP Telephony carries business calls over an IP network instead of relying solely on traditional phone wiring. A communications platform can connect desk phones, software phones, mobile users, carriers, and business applications in a design shaped around your needs.
Flexible deployment
Choose local, hosted, hybrid, or multi-site designs.
Unified collaboration
Connect calling with compatible conferencing and mobility tools.
Visibility and control
Plan administration, reporting, and call-flow oversight.
How the pieces connect
IP phoneSoftphoneMobileSecure networkPBX
SIP trunkCRMContact center
Conceptual architecture; actual integrations depend on the selected design.
Platform comparison
Choose the right communications platform
Compare call-control platforms, cloud services, and endpoints on the same practical criteria. Walan can help assess, configure, and support an implementation within an agreed scope.
Showing 8 platforms.
Issabel PBX
Open-source unified communications software based on Asterisk.
- Platform type
- Software-based IP PBX and unified communications.
- Best suited for
- Organizations seeking an integrated, adaptable PBX interface.
- Key capabilities
- Voice, video, conferencing, contact-center tools, reporting, recordings, and integrations where supported by modules and deployment.
- Deployment considerations
- Evaluate local or hosted designs; check module compatibility, capacity, security, and maintenance ownership.
Asterisk PBX
An open-source communications framework for tailored calling workflows.
- Platform type
- Configurable software communications framework.
- Best suited for
- Teams with tailored call flows or integration requirements.
- Key capabilities
- Designed IP PBX, VoIP gateway, conferencing, call-routing, and application workflows.
- Deployment considerations
- Plan suitable infrastructure, design, administration, testing, and ongoing expertise.
Grandstream UCM
An appliance-based unified communications platform.
- Platform type
- On-site IP PBX appliance.
- Best suited for
- Organizations evaluating an appliance-led communications stack.
- Key capabilities
- Voice, video, mobility, conferencing, routing, queues, recording, analytics, and remote collaboration vary by model and configuration.
- Deployment considerations
- Confirm model capacity, endpoint support, updates, and remote access.
Cisco Unified Communications Manager
Cisco UCM (CUCM) provides enterprise call and session control within a broader collaboration ecosystem.
- Platform type
- Enterprise call- and session-control platform.
- Best suited for
- Organizations needing enterprise call control and a broad Cisco collaboration ecosystem.
- Key capabilities
- Voice, video, messaging, mobility, conferencing, instant messaging, presence, remote-worker options, and supported endpoint and application integrations, depending on the solution design.
- Deployment considerations
- Confirm editions, licences, infrastructure, endpoints, integrations, and the capabilities included in the selected configuration.
Cisco Webex Calling
Enterprise cloud calling integrated with the Webex App, combining business calling with messaging and meetings.
- Platform type
- Cloud calling and collaboration service.
- Best suited for
- Cloud-first organizations and distributed teams.
- Key capabilities
- Desktop and mobile calling, voicemail, directory, transfer and continuity functions; audio/video meetings, screen sharing, messaging spaces, presence, and file sharing where supported.
- Deployment considerations
- Check subscription, calling connectivity, regional availability, endpoints, network readiness, and service configuration.
Yealink Solutions
An IP/VoIP phone and collaboration-endpoint ecosystem that connects to supported IP-PBX and unified-communications platforms—not automatically a standalone PBX.
- Platform type
- Endpoint and collaboration solution ecosystem.
- Best suited for
- Teams selecting compatible desk phones, video endpoints, and meeting devices.
- Key capabilities
- HD voice, call management, conferencing, multi-line use, transfer, voicemail, programmable keys, headsets, video endpoints, content sharing, and SIP voice integration where supported.
- Deployment considerations
- Verify the selected model’s features, provisioning, and compatibility with the chosen platform.
3CX Solutions
An enterprise business IP phone system that combines calling with supported communications channels.
- Platform type
- Business IP phone system.
- Best suited for
- Organizations seeking an integrated IP telephony and client-app experience.
- Key capabilities
- SIP trunks, IP phones, routing, IVR, ring groups, queues, paging/intercom, presence, web/desktop/mobile apps, video meetings, internal chat, website live chat, and selected messaging integrations where supported.
- Deployment considerations
- Check edition, hosting, trunks, endpoints, and channel support. Microsoft Teams integration is a possible integration path, not a universal feature.
Microsoft Teams Phone / Cloud Phone System
Microsoft 365 cloud-based call control and PBX capability for internal Teams calling and external PSTN calling through a supported connectivity design.
- Platform type
- Cloud call control within the Teams collaboration environment.
- Best suited for
- Organizations using Teams for calling and wider collaboration.
- Key capabilities
- Hold, transfer, voicemail, call history, auto attendants, queues, routing policies, reporting, desktop/mobile clients, certified phones, and meeting-room devices where supported; plus chat, presence, meetings, and voice/video calling.
- Deployment considerations
- External PSTN calling requires a supported calling plan, Operator Connect, or Direct Routing design. Confirm licensing, region, devices, policies, and network readiness.
Capabilities depend on product model, edition, licence or subscription, endpoint, integration, network, region, and configuration. Confirm final scope with Walan Networks.
Connected work
Collaboration Solutions
Unified communications and collaboration environments can bring together IP telephony, voice and video calling, conferencing, mobility, instant messaging, presence, voicemail, call routing, compatible phones, soft clients, mobile devices, meeting rooms, and workflow integrations. Walan can help evaluate and integrate the right combination of call control, cloud calling, endpoints, applications, and collaboration services for your requirements.
Explore the capability map
Select a node to see how it can contribute. Available capabilities vary by selected platform and deployment.
IP Telephony provides the calling foundation through a supported PBX or cloud-calling service.
Compatible clients and endpoints can support voice and video conversations across locations.
Conferencing connects participants through supported audio, video, and sharing tools.
Mobile devices and soft clients can extend communications beyond a desk.
Supported messaging tools help teams continue a conversation between calls.
Presence can show availability within compatible applications and workflows.
Voicemail and routing help direct callers and handle unanswered calls.
Supported contact-center tools can coordinate queues, agents, and customer interactions.
Compatible integrations can connect communications with business systems and workflows.
Meeting-room devices can bring in-room and remote participants together where supported.
Voice foundation
Plan call control, numbers, trunks, routing, voicemail, and compatible phones around everyday calling needs.
Video calling
Connect supported desktop, mobile, and room experiences for face-to-face conversations.
Conferencing
Bring participants together with suitable meeting access, audio/video, and sharing tools.
Mobility
Evaluate soft clients and mobile calling for people working across sites or remotely.
Messaging and presence
Use compatible messaging and availability tools to support faster coordination.
Integrations and workflows
Assess supported contact-center, directory, CRM, and business-process connections.
How the pieces fit together
- Call control/PBX or cloud calling
- User and device clients
- Conferencing and messaging
- Contact center and business integrations
- Monitoring, security, and continuity
Typical building blocks by environment
On-premises UC
Local control · on-site call control · connected endpoints
Cloud collaboration
Cloud-managed · service-based calling · app clients
Hybrid UC
Mixed environment · coordinated local and cloud services
Distributed/multi-site UC
Multi-site coordination · shared policies · planned routing
These are conceptual building blocks, not bundled features. Confirm platform, service, endpoint, and integration support for the selected design.
Design my collaboration solutionDeployment models
Deploy communications the way your business works
Compare the operational trade-offs, not just where the PBX lives. Select an option to explore a conceptual design.
On-premises
Keep the core communications platform at your location for greater local control and closer alignment with existing infrastructure.
Benefits
Local ownership of configuration and infrastructure decisions.
Considerations
Plan internal ownership, hardware maintenance, power, backup, and access.
Recommended use cases
Teams with suitable on-site infrastructure and local-control requirements.
Local architecture
Office usersLocal PBXSIP carrier
Cloud hosted
Connect locations and remote users to a hosted communications platform.
Benefits
Remote accessibility and less on-site PBX infrastructure to own.
Considerations
Review recurring services, connectivity, security, and provider responsibilities.
Recommended use cases
Teams prioritizing remote access and simplified local infrastructure.
Hosted architecture
OfficeRemote usersHosted PBXSIP
Hybrid
Connect local systems with hosted services in a coordinated architecture.
Benefits
Support phased modernization while retaining useful local components.
Considerations
Document integrations, routing, security boundaries, and operating policies.
Recommended use cases
Organizations transitioning from an existing local system.
Connected architecture
Local PBXSecure linkHosted services
Distributed
Design calling across offices, branches, and remote users with appropriate inter-site routing.
Benefits
Coordinate multi-site dialing and consider local survivability.
Considerations
Assess network quality, QoS, connectivity, carrier routing, and failover.
Recommended use cases
Organizations with several locations or geographically dispersed users.
Multi-site architecture
Site ASite BVoice networkRemote users
Decision path · guidance, not an automated quote
Need local control? → On-premisesNeed remote scale? → Cloud hosted or hybridNeed multiple sites? → Distributed design
Several needs may overlap; a network and requirements review determines the right fit.
Capabilities
A complete IP Telephony feature set
These are capabilities to evaluate, not a promise that every platform includes every item. Availability depends on platform, module, licence, endpoint, and configuration.
Everyday calling & administration
Inbound and outbound calling
Call waiting
Attended and blind transfer
Follow-me and find-me routing
Pickup groups and call groups
Caller ID
Music on hold
Voicemail to email
IVR and automated attendant
SIP and H.323 where supported
Video phones with compatible endpoints
Remote mobile extensions
Web administration panel
Calendar and directory
Backup and restore
Endpoint provisioning and hardware/interface detection
Advanced workflows & insight
Multi-level IVR and advanced routing
Queues, skills, ring strategies and overflow
Call recording and retention policies
Real-time call monitoring
Reports, billing and consumption visibility
CRM and business-system integration
APIs and workflow automation
Multi-site dialing plans
Softphone and mobile collaboration
Video meetings and conferencing
Operator console and presence workflows
Inbound and outbound campaign management
Expandable workflows
Extend the platform with the modules you need
Choose modules to support the way your teams work. Walan can help define and configure an appropriate implementation; platform support and scope must be confirmed.
Call Center Module
Coordinate agent and supervisor workflows for incoming and outgoing operations.
- Incoming and outgoing campaigns
- Queues and IVR flows
- Agent console and call-management interface
- Supervisor tools and real-time visibility
- Recording, reporting, and performance review
- Collaboration across agents and supervisors
Caller→Queue / IVR→Agent→Supervisor insight
Web Conferencing Module
Bring compatible meeting experiences into the broader communications plan.
- Browser-based meetings where supported
- Audio and video collaboration
- Screen sharing and presentations
- Meeting access and participant management
- Remote team collaboration
- Integration with unified communications
Host→Meeting room←Remote participants
Capabilities vary by platform and deployment.
Designed with care
Security built into the communications plan
Security is a set of design and operating decisions—not a certification or guarantee. Assess exposure, permissions, logging, and maintenance across the complete voice environment.
Firewall modules and network segmentation
Fail2Ban administration where supported
Geolocation-based IP blocking where supported
Hardening and least-privilege administration
Firewall controls by user, port, and interface
Audit and activity logs
Password and access policies
SIP trunk, endpoint, remote-access, and account protection
Practical security checklist
- Secure administration
- Restrict exposed services
- Use strong credentials
- Monitor logs
- Keep systems patched
- Separate voice traffic
- Define backup and retention policies
- Review remote access
Business continuity
Keep critical communications available
Availability starts with design and testing, not an uptime promise. Plan redundant components and failover; validate backups and restoration; review secondary connectivity and carriers; consider multi-site survivability; establish monitoring, alerting, and incident runbooks; and test disaster recovery.
Conceptual continuity topology
Sites & endpointsPrimary PBXCarrier / SIPRemote site↕ Failover path ↕Secondary connectivityMobile usersSecondary PBXBackup / restore
01 · Plan the failure paths
02 · Test recovery procedures
03 · Improve the design
Implementation journey
From requirements to ready-to-use communications
Discovery and requirements
Network and QoS assessment
Platform and deployment design
Configuration and integrations
Pilot and user acceptance testing
Migration and rollout
Training, documentation, and support
What we need from you
User count · locations · call flows · existing phone system · carrier/SIP details · integrations · compliance needs · continuity requirements.
Implementation & enablement
Technology is only part of the solution.
Walan Networks can work with your team on solution design, configuration, migration planning, user training, administrator handover, documentation, monitoring guidance, and ongoing support options. The exact responsibilities and support scope are agreed for each project.
Discuss your project
Frequently asked questions
Questions worth asking early
What is IP Telephony?
It uses IP networks to carry calls and connect compatible phones, software clients, and communications services. The exact setup depends on your network and platform.
Which platform is right for my organization?
Start with users, call flows, infrastructure, integrations, administration needs, and budget. Then compare each platform’s supported capabilities and operational requirements.
Can IP Telephony work with remote users?
Often, yes. Compatible mobile clients, softphones, and secure remote-access designs can connect remote users, subject to platform and network requirements.
Can we keep our existing numbers and phones?
Possibly. Number portability depends on your carrier and location; phone reuse depends on device compatibility and provisioning. Both should be checked before migration.
How do the deployment options differ?
On-premises puts core systems locally; cloud hosted uses remote infrastructure; hybrid connects both; distributed coordinates several sites. Connectivity, security, ownership, and routing needs guide the choice.
How do call center and web conferencing modules fit in?
They extend the communications workflow with agent tools or meeting capabilities. Availability and integrations depend on the selected platform, modules, and deployment.
How do you approach security?
We consider network exposure, access policies, endpoint and trunk protection, updates, monitoring, and backup practices as part of solution design. Controls vary by platform.
How do you plan for high availability?
We identify critical call paths and consider failover components, connectivity, backups, monitoring, and recovery testing appropriate to the business requirement.
What information is needed for a quote?
Share user count, locations, existing phones and carriers, required call flows, integrations, deployment preferences, and continuity needs. A discovery conversation can fill the gaps.
Let’s plan what’s next
Build a communications platform that fits your business.
Tell us about your users, locations, call flows, integrations, and continuity goals. Walan can help you evaluate the right platform and deployment approach.
Discuss your project
Contact Walan Networks through its verified official contact channel to request a quote or speak with an expert. Have your user count, locations, existing system, and project goals ready for the conversation.
Verified contact details can be added when this page is published in WordPress. This standalone page does not collect enquiries.