How to get Incoming CallerID


I had just installed a new FreePBX 15 IP PB Server with a TDM410 card.
This IP PBX system functions are working except for the incoming caller id.
CDR report shows UNKNOWN in the CALLERID field.
How to config the dahdi to get the correct CALLERID from pstn?


Does your Telco supply CallerID?, if so did you subscribe for it?, if both of the above, by what method do they send it?


The inbound is a pstn trunk. I am sure that my Telco supplier, Chunghwa Telecom in Taiwan, send the caller id. But I am not sure the method.


Don’t be sure, check it out, does a $15 analog phone from your local electronic store show it? Ask Chunghwa the method they use?

uses FSK, adjust your dahdi



I don’t know whether the TDM410 can properly detect the DTAS signal if your telco is using V.23. Try all four cidstart settings and hope that one works. If they are using DTMF, you should have no trouble.


I contact my telecom provider to change the method to tdmf. And get the Caller ID #configuration.
But the incoming caller id # is not a full phone #. It is randomly lost some digits of phone #.

(system) closed #8

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