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CUCM, UCCX, and CVP without a fake script

CUCM is the call-control point. UCCX rides on CUCM. CVP's SIP paths are in the guide for the version you run.

Learn in 5 minutes

  1. Place PSTN SIP on CUBE or CUCM
  2. Keep UCCX off the carrier trunk
  3. Send CVP readers to the matching configuration guide

Visual

PSTN lands on CUBE, then CUCM · study drawing · cyphermonkeylabs.com CarrierCUBECUCM INVITE 100 INVITE 180

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Contact-center products sit behind call control. They do not replace the trunk.

Worked example

Where the carrier INVITE stops first The first hop is the carrier. Which element receives it?

  1. Press Play.
  2. Step until the hop named in the question.
  3. Inspect that message and answer the check.

Fault

A design shows the carrier at 192.0.2.40 sending INVITEs directly to UCCX, and it adds a full UCCE script from memory.

UCCX call control is through CUCM. CVP paths come from the version's guide.

Quiz

PSTN SIP in this picture lands on


CUCM's role here is


UCCX is reached


CVP SIP paths are taken from


The carrier address in this lab ladder is


A comprehensive UCCE call flow in this lesson is


Ecosystem

Glossary, sister systems, and the integration seam for this room.

AI omni-channel agents A voice bot still needs a session. SIP creates, modifies, and ends sessions. Omni-channel, in the contact-center sense, means the same contact can also live on chat or another digital channel. Those channels do not replace the voice session. On Amazon Connect the platform owns the managed PSTN voice channel. Bridging an outside carrier into Connect with a Chime Voice Connector is not a supported pattern unless AWS reviews it. When an SBC forks the voice leg to a recorder, that fork is SIPREC, a different plane from the customer dialog.

AI agents A voice bot still needs a session. On Amazon Connect the platform owns the managed PSTN voice channel. Bridging an outside carrier into Connect with a Chime Voice Connector is not a supported pattern unless AWS reviews it. The FreeSWITCH manual page also describes SignalWire, founded by the FreeSWITCH team, as a hosted platform with AI agents behind REST APIs and SWML.

Glossary · Ecosystem map · Ports · Troubleshooting

Sources and go deeper