Modems & UK Caller Id

To get caller id off the line & into the PC requires a modem that supports Caller Id. The one I singled out during my search for a compatible modem was the US Robotics 56K Faxmodem v.92 Model 5630B. I bought one off eBay for £5.50 (£11 if you include postage) which turned out to be brand new & still shrink wrapped.


Once hooked up & drivers from the accompanying CD-ROM were installed I gave the landline a call from my mobile. Unfortunately the caller id software (YAC) didn't identify the number.. so I tried again a few times without any luck. At first I thought it was a problem with YAC, but then I checked the modem log…

06-20-2006 19:05:01.252 – Waiting for a call.
06-20-2006 19:05:01.262 – Send: at#cid=1<cr>
06-20-2006 19:05:01.382 – Recv: <cr><lf>OK<cr><lf>
06-20-2006 19:05:01.382 – Interpreted response: OK
06-20-2006 19:05:01.392 – Send: ATS0=0<cr>
06-20-2006 19:05:01.512 – Recv: <cr><lf>OK<cr><lf>
06-20-2006 19:05:01.512 – Interpreted response: OK
06-20-2006 19:05:50.182 – Recv: R
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: ING<cr><lf><cr><lf>
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: D
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: ATE = 0
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: 6
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: 20<cr><lf>TIM
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: E
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: = 1905
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: <cr>
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: <lf>NMBR =
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv:
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: 0883933
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: 5
06-20-2006 19:05:50.182 – Unknown Response
06-20-2006 19:05:50.182 – Recv: 612<cr><lf>
06-20-2006 19:05:50.182 – Unknown Response
(note, mobile number in the log has been changed to 08839335612)

The important thing highlighted in the log are the lines saying 'Unknown Response'. This means that the incoming string (from the modem) isn't matching up with what the modem driver is expecting.

I found all this out by reading a really detailed page off the Talking Caller Id site. It goes through the steps you can take to correct the modem driver so that the incoming strings will be resolved correctly.

Before I started modifying the driver, I went over to the US Robotics support page for the 5630 and downloaded the latest driver & firmware which were more up-to-date than the ones shipped on the accompanying CD-ROM.

That was it for day 1… I'll see whether the latest driver & firmware solved the problem and post the results in the next few days.

If you have any questions, please feel free contact me (click on Contact at the top right). 

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