atcomsystems.ca/forum Forums General General Telephone & Systems Information Bell Canada "Local Link"

I doubt that you will see much of anything but DMS switches in Bell Canada territory. They practically invented them when they were spun off on their own back in the 1970's from the US Bell System. My guess, and it's only a guess, is that it might mean DMS Hub office with remotes? Maybe you could try sending a PM to AnthonyH. He works with them from time to time and might know.

I was able to find some info on this exchange

The Switch is a DMS100, as ED said most offices in the area probably are.

I am not familiar with the "Local Link" service, I sounds like it may be some type of Centrex service, but I am just guessing at that.

From what I understand Canada's CID info works a little different then it does in the US. I found an article that may help explaine it a bit.

"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. "

The page I found this on is:
https://www.ainslie.org.uk/callerid/cli_faq.htm

I hope this helps a bit

AW what seems to be your issue?

Local link is not Centrex. It is a standard 1FB POTS line with a packaged bundle of features...

caller ID
3 way calling
call answer
call forward

FYI Bell Canada calls their PRI service Mega-link.

Yes 99% of Bell Canada use DMS100 switches. As Anthony said Bell Canada was the parent company to Bell Northern Research (BNR) and Northern Telecom (Nortel) in the 70's and 80's where the DMS was born.

I've never had any issue with Caller ID or TAPI applications.

Thank you all very much for the help. I think anthonyh found what I was looking for. I could not find the standard detailing the spec for the error code being generated (Parameter Type 06).
I'm pretty sure I can get a hold of a copy the Stentor document and detail the spec.

Not to drag out the thread, but I did have a copy of the Bell doc already, with no mention of type 6. I found a copy of the Stentor doc and a related document descibing (just as above) the "L" for long distance.

Just wanted to thank everyone for helping out.