I have had caller id for several years via a Dynalink Modem V1456VQE. I wrote a program that monitors the modem via the serial port and notifies me of incoming calls. The setup of the modem is as simple as ATZ and then AT&F#CID=1 to enable caller id.
Since the last 2 to 3 weeks I had problems with the caller id. It mostlty doesn't receive any caller information. Maybe one in 20 calls still have the caller id info.
I am with orcon as my ISP (broadband) and homeline.
Here is what I have tried so far:
- Unplugged all other phone devices.
- Got a second modem (same make and model) and tried that.
- Tried it on the first socket where the line comes into the house (I haven't tried detaching the rest of the wiring yet).
- I got an old standard Telecom Caller ID unit (thats the wierd thing, it always works).
Using a terminal program (putty) on the serial prot to the modem I can see the individual rings, the caller infromation should be between the first and the second ring, but the modem does not seem to register them.
Has anything changed in the way that the caller id is being send out?
Could some line fault cause that problem?
The telecom caller id unit seems to have no problem, are there any modem settings that could be at fault?