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Pass caller ID when call forwarding from phone
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keffa Offline
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Posts: 37
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Post: #3
RE: Pass caller ID when call forwarding from phone
To slightly simplify Chris's explanation, this works one of two ways...

1. Caller calls phone A, who forwards the call to phone B. However the forward is done within the same PBX or a private trunk. In this case, it's trivial and simple and is merely a case of insuring the correct settings are enabled on the PBX and phone.

2. Caller calls phone A, who forwards the call via an external call using the public switched telephone system (Otherwise known as the PSTN or more simply, your phone company), to phone B. In this case it probably will not, and will never, work. The reason for this is no public phone carrier would ever allow the passing of custom CLID because it would open the phone system to some serious abuse. The CLID would always be from phone A's breakout point into the PSTN which means, using the example you gave, the call will always show 800-555-5555.

You need to work out which of the two scenarios above describes your situation.
10-01-2015 11:01 PM
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RE: Pass caller ID when call forwarding from phone - keffa - 10-01-2015 11:01 PM

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