Caller ID
Northern.Bob:
My problem stems from the fact that Bell Canada uses a slightly different way to do CID here. I'm running a special test firmware that works but am waiting for the official firmware release that includes the fix. The last release did not include it.
QBZappy:
Obihai team,
You guys may not be familiar with some of the telephony standards in Canada. This might be a good reference for your software engineers.
Copied from here ( http://www.ainslie.org.uk/callerid/cli_faq.htm#Q_7 )
7. I'm in Canada, why doesn't my Caller ID work?
Yes, there is a country where things are more complicated than the UK. Most people think that Canada uses Bellcore, just like the USA. It does - almost. For some reason, the former Stentor member companies use a non-standard implementation of MDMF. Bellcore uses DN (Directory Number), usually the 10 digit number that includes the area code found in the phone book. Stentor uses DDN (Dialable Directory Number), a variable length number that is the number that must be dialed to call the other person
back (ie local calls don't include area code, long distance includes the preceding "1"). Normal Bellcore MDMF identifies each part of a message with a Message Type Word parameter, and the DN is assigned Parameter Type 02. The Canadian Stentor switches assign DDN to 03.
This is incredibly confusing for anything that only looks for the DN in 02, and this includes Unimodem (see below). Some modem drivers (and Canadian phones and caller ID boxes) check for both DN and DDN and will display either - 3Com ones for instance (and is there a general patch, perhaps for Unimodem?). Otherwise, you just have to avoid TAPI and use software that specifically knows about this quirk - Identafone is one, but most Canadian authors seem to have found out about this the hard way ;-). The relevant document was called Stentor document ID-0001 "CALL MANAGEMENT SERVICE (CMS) CALLING NUMBER DELIVERY (CND) (Single and Multiple Message Format) Terminal-to-Network Interface". Following the upheavals in the Canadian telecom market it is now Bell Interface Document BID-0001 and will cost you CAN$50 to download. Incidentally, Stentor's standard also allows for a Parameter Type 06, which includes a flag that indicates that the call is long distance and CallerID is not available, but it may no longer be in use.
Reference sites with documentation for Canada:
http://www.bell.cdn-telco.com/bid/ (I think all Canadian standards are documented here)
http://www.bell.cdn-telco.com/bid/bid-0017.pdf <- This one specifically refers to CID standards in Canada
Hope this helps.
LeftRight:
Very useful info! QBZappy ... This might explain what Northern.Bob experienced, no number but name is shown.
Northern.Bob:
Thant might well explain the problem. I hope the Obi team will incorporate a fix for that in the next release. Even better if they don't have to pay $50 for it !
curt00:
I have tried setting RingDelay to 5500 and to "Device Default" and I still do not get Caller ID (neither name nor number).
I placed calls from Google Voice and Bell Canada analog line to my recently installed Obihai202 line. Not only am I not getting Caller ID, the ring does not seem to be delayed at all.
Does anyone have any suggestions? Do I have to wait for Obihai to make the fix as mentioned by QBZappy and Northern.Bob?
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