I need the ability to forward calls to my cell phone and have the UC320W and my SIP provider preserve the incoming caller ID to my cell phone. When out of the office, I enable call forwarding to an external number in the configuration utilty, and this works fine. However, I see my SIP trunk outbound caller ID number on calls at the cell phone, not the original caller's caller ID. I am configured for PBX mode, using only a SIP trunk, with no FXO trunks connected.
I understand that the SIP trunking provider must support this feature, and my provider (Triad Telecom) indicates that they do support this. However, I cannot make it work with the UC320W. Anyone found a way to make this work?
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