IP Phone call CUPC only 1 way traffic

Unanswered Question
May 6th, 2010
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Hi ;


In our system run CUCM and CUPS with version 7.1.3. In this system have IP Phone, CIPC and CUPC. Encoutner an issue that where by IP Phone call to CUPC user only one way traffic, IP phone can't hear CUPC but CUPC can hear IP phone. More scenarion as per below ;


IP Phone <----------> IP Phone, both way no issue.

IP Phone <----------> CIPC, both way no issue.

IP Phone ----------> CUPC, one way traffic, IP Phone can't hear CUPC but CUPC can hear IP Phone.

CUPC ---------------> IP phone, both way no issue.


IP phone in VOice VLAN and CUPC&CIPC in data VLAN. Any idea ? network/FW issue or CUCM/CUPS config ? Pls advice. THanks.


rgds

tan

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