Port details CUCM to OCS

Unanswered Question
Mar 10th, 2010
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Hi,


We have configured SIP trunk between CUCM to OCS and in between we have firewall. what are all the ports i need to allow in firewall for call establiishment between IP phone to Office communicator. Hope CUCM RTP media stream uses 16384-32766 UDP correct me if i am wrong.


1) What would be the source port range if a call is intiated from Office communicator.

2) What would be the source port range if a call is intitaed from Cisco IP phone.

3) CUCM to OCS SIP trunk port details?


Thanks in advance.


Regards,

Pradeep

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