I set up an SPA3102 on the FXS port of a router(SPA3102's FXO port to router's FXS port), in order to convert the analog signal coming from the telco, to digital and register it with an IP-PBX(Asterisk).
Calls are working in both ways, ie. from the few SIP phones and the analog phone(plug to the FXS port of the SPA3102 and registered as a SIP client), without problems. IP-PBX's internal calls are OK and calls to outside and from outside via the PSTN are OK as well.
The only problem I have, is I cannot get the caller ID on the SPA3102 when the call is coming from the PSTN.
When I plugged a regular ATA phone into the telco's router FXS port, I can see the caller ID without problem.
The caller ID disappear when I plug the SPA3102. It doesn't even appear on the SPA3102's web interface /voice/system.
There are just no information at the "Last PSTN Caller" line.
I have tried many things but I'm a bit at loss right now and would like to know if somebody knows how to get the "Last Called PSTN Number" displayed.
Things I tried are (not necessary in the following order):
-upgrade the firmware to 5.1.10 to 5.2.13,
-test all the possibilities under the /voice/regional/Miscellaneous settings related to "Caller-id Method" vis-a-vis "Caller-id FSK standard"
-test many combinations (maybe all actually) between DTMF tx Mode and DTMF tx Method
-change the FXO port impedance (600/global/220+820||120nF)
-change the PSTN answer delay to 16
and few others actually but no avail.
I am based in Japan and I phoned to the telco to get an answer regarding the standard they are using but didn't get a clear answer.
The /voice/PSTN Line/PSTN-to-VOIP "PSTN CID for VOIP CID" is set to yes.
Nothing appears in the logs when calling the SPA3102 from outside. The FXO log utility is only displaying the following messages:
You have a Cisco Unified Communications Manager (CUCM) system and want
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