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Caller ID CPN substitution question on SIP gateway scenario with 3300

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ExCentigram

ExCentigram

IS-IT--Management
Jul 26, 2011
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I have a cluster of 3300's
We're trying out SIP, so I have one 3300 in our datacenter that is used for SIP trunking only with an MBG connected as the SIP proxy.

I've routed all calls from one of my 3300's via ip trunking to the SIP3300 and the call goes out OK, except the caller ID is showing another 3300. In the SIP CPN substitution form i have the right ext #'s in the SIP3300 but it's not working...
 
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