UCM, Dedicated Instance, Webex Calling, local gateway, Cisco phones and rooms.
Collaboration and UCaaS
One UCaaS plan for Cisco call control, Microsoft Teams and SIP/PSTN.
Tesrex reviews the calling estate with practical collaboration and Cisco/Microsoft integration discipline: what stays on UCM, what moves to Webex Calling or Dedicated Instance, where Teams Phone or Cisco Call for Microsoft Teams fits, and how SIP/PSTN, devices, rooms and support ownership are handled.
UCaaS decision lanesCisco call control, Teams surface, reliable integration.
Teams Phone, Teams policy, Teams devices, Operator Connect, Direct Routing and user experience.
Cisco calling reliability, feature depth, devices, rooms and support ownership stay available while Teams remains familiar.
Start with call control, Teams surface and the integration layer.
Tesrex maps Unified CM, Webex Calling, Dedicated Instance, Teams Phone, Cisco Call for Microsoft Teams, SIP trunks, PSTN, devices, rooms and emergency calling before the service plan is written.
One estate can need Cisco control, Microsoft Teams interaction and a shared support model.
Cisco call control
Keep the calling control plane visible before deciding what stays on premises, moves to Webex or shifts into Dedicated Instance.
On premisesCisco Unified Communications Manager, Expressway, Cisco phones, gateways, room systems and established operational controls.
HybridUnified CM plus Webex services, Cloud Connected UC, UCM Cloud, Dedicated Instance, local gateway and staged movement.
Full cloudWebex Calling, Dedicated Instance, Control Hub, Webex App, Cisco devices and SIP/PSTN dependencies.
Microsoft Teams surface
Treat Teams as the daily user surface where Microsoft 365 policy, devices and PSTN choices shape the calling experience.
Teams PhoneCalling Plan, Operator Connect, Teams Phone Mobile, Direct Routing, Teams devices and Teams admin policy.
Devices and roomsTeams phones, certified devices, room systems, shared spaces and front-line calling policy.
Cloud user experienceMicrosoft 365 policy, Teams admin control and Teams client behaviour become the day-to-day calling surface.
Cisco reliability, Teams familiarity
Keep Cisco calling reliability, feature depth and operational ownership available where Teams is the user surface.
Cisco Call for Microsoft TeamsTeams is the user surface while Cisco UCM, Webex Calling or Dedicated Instance remains the calling path.
SIP/PSTN and local gatewaySIP trunks, PSTN provider choices, local gateway, dial plan and site fallback are handled with the call-control decision.
Rooms and support ownershipRooms, emergency calling, helpdesk evidence, change control and handover ownership are made explicit.
Cisco call control and the Teams user surface need separate decisions.
The map separates Cisco UCM, Webex Calling and Dedicated Instance from Teams Phone and Cisco Call for Microsoft Teams. The workpack then carries SIP/PSTN, devices, rooms, support ownership and AI experience checks.
Cisco UCMWebex CallingTeams PhoneSIP/PSTN
The important decision is what owns call control, which app users work in and what support can prove.
The map separates Cisco UCM, UCM Cloud, Dedicated Instance and Webex Calling from Teams Phone and Cisco Call for Microsoft Teams. Tesrex joins the chosen calling path with SIP, PSTN, devices, rooms, support ownership and AI experience checks into one workpack.
Cisco call controlUnified CM on premises, UCM Cloud, Dedicated Instance or Webex Calling.
Microsoft callingTeams Phone with Calling Plan, Operator Connect, Teams Phone Mobile or Direct Routing.
Teams with Cisco call controlCisco Call for Microsoft Teams where Teams is the surface and Cisco remains the call-control path.
AI experience checksSummaries, captions, noise removal, handoff context, quality evidence and adoption feedback.
AI belongs after call control is understood.
Summaries, captions, noise removal and handoff context are useful when the calling path is traceable: who owns call control, how SIP/PSTN connects, which devices and rooms users rely on, and what support evidence exists.
- Call experienceNoise removal, captions and transcription help when policy, platform and recording boundaries are understood.
- HandoffsAI summaries and transfer context can reduce repetition when policy allows that context to move with the call.
- Service evidenceCall quality, call-control choices, device behaviour and support notes become the improvement record.
- AdoptionUser feedback and reviewer notes show where training, policy or platform change will reduce friction.
What the UCaaS review checks.
Call flow, Teams or Webex user surface, SIP/PSTN, devices, rooms, emergency calling, support ownership and AI experience are reviewed together.
Engineering evidence. Leadership decision.
Which platform owns dial plan, features, voicemail, transfer, emergency calling and survivability.
Whether users should live in Webex, Microsoft Teams, Cisco Call for Microsoft Teams or a mixed model.
Calling Plan, Operator Connect, Teams Phone Mobile, Direct Routing, SIP trunks, Cisco PSTN, local gateway and site fallback.
Cisco phones, Teams phones, room systems, meeting interoperability, shared spaces and front-line users.
What the helpdesk sees, who owns incidents, how call quality is checked and how changes are handed over.
Where summaries, captions, Copilot, Webex AI, quality evidence and adoption feedback are allowed by policy and useful to support.
What you get back.
A workpack written from the calling estate: what stays on Cisco, what moves to Webex, where Teams owns the user surface, and which SIP/PSTN, device, room and support dependencies block movement.
UCaaS workpack
Call-control decision, dependencies, next move.
- Cisco and Microsoft call-control and user-surface map
- on-premises, hybrid and cloud calling decision pack
- Teams Phone and Cisco Call for Microsoft Teams integration notes
- SIP, PSTN, device, room and emergency-calling dependency register
- AI experience checks for summaries, captions, handoffs and quality evidence
- migration, adoption and support workpack
Bring the calling estate before the UCaaS decision.
Bring the UCM, Teams, SIP/PSTN, room or migration detail. We will map the call-control decision, user surface, support ownership and AI experience checks into one service plan.