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Juraj Papic
Participant

Sip trunk to CUCM

Hi all,

I would like to know in what scenarios I have to configure a SIP trunk from the CUCM to the Presence?

 

thanks. 

1 ACCEPTED SOLUTION

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From the configuration guide for CUPS.

Configure SIP Publish Trunk on IM and Presence Service

When you turn on this setting, Cisco Cisco Unified Communications Manager publishes phone presence for all line appearances that are associated with users licensed on Cisco Unified Communications Manager for IM and Presence Service.

This procedure is the same operation as assigning a SIP trunk as the CUP PUBLISH trunk in Cisco Cisco Unified Communications Manager service parameters.



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Roger Kallberg
VIP Advisor

Not 100% sure, but if memory serve me it's required for any systems from 8.5 and higher. Can't find a document to back that right now, but there is for sure mentioned in various Cisco doc.



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Im asking this because I have a customer with a CUCM and IM working and there is no SIP trunk configured.

thanks.

The trunk in itself is not used for IM. It’s use is for presence information, like On a call.



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From the configuration guide for CUPS.

Configure SIP Publish Trunk on IM and Presence Service

When you turn on this setting, Cisco Cisco Unified Communications Manager publishes phone presence for all line appearances that are associated with users licensed on Cisco Unified Communications Manager for IM and Presence Service.

This procedure is the same operation as assigning a SIP trunk as the CUP PUBLISH trunk in Cisco Cisco Unified Communications Manager service parameters.



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Thanks!!!
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