atcomsystems.ca/forum Forums TDM Business Telephone Systems Mitel Telephones & Systems Caller id on sx200 icp with t1

I myself have not dealt with the Sprint/MCI inbound ANI/DNIS circuits. Im betting dollars to doughnuts this circuit in question isnt capable. and a upgrade to a PRI will be needed to get what he is looking for.

That being said- Mntel can you give us any additional info since you were talking to AT&T

AT&T was of no help, on first call the rep said she has no idea how it works but the order for caller Id was already processed & closed. On second call after being transfered to couple of reps. In different dept. ( state or country who knows) finally the last person said it seems a local issue & created a trouble ticket. I have no idea what local issue means ( CSU/DSU unit may be) , property right now has an adtran csu ace unit for T1

CSU/DSU HIGHLY doubtful, since the ani/dnis would be encoded in the specific channel that the call is on. Audio would be butchered as well. If you pick up a POTS call after the 1st CO ring, you can hear the CID as a sort of a squeal. It's actually ASCII characters, at 1200 baud as I recall. Since the T1 is being decoded in the Mitel, there is no way to prove or dis-prove reception using the 'ear' method! However, you are going to be told that the problem is in the CSU/DSU, so you'd better have another available. Preferably in a factory sealed box! Just to prove them wrong! They will deny responsibility until you escalate to the supervisor's supervisor! What kind of Central Office is the T1 coming from? Maybe we can get some help from that thread?

Like Lightninghorse suggests, try the CSU/DSU/T1 Forum. Someone there may have a solid answer on the circuit question, beyond what the Mitel controls.

Get AT&T to send you the exact build out of the circuit. Confirm the coding, framing, caller ID (ANI) and all your DID’s. Also ensure COS for the trunks include 811 and 814.

I'll just add, the ANI is passed inband, so with the proper equipment you can verify whether or not the carrier is sending it.

Something like an Adtran 100 etal with a fxs card mapped to a chosen channel and a digi grabber would do the trick. I have done this on the bench with regard to ANI troubleshooting and/or emulation.

I know everyone doesn't have all the equipment that I may have at my disposal. But an Adtran 100-120 with a couple of cards, is worth the investment IMHO

I would think that nine POTS lines would be cheaper than a T1. Also on the ICP both controlers are equipped with six CLASS trunks that pass Caller ID on both Supersets and single line display phones. If you are using the ASU II units combo cards can be installed adding additional CLASS trunks. Also if you are using an MX controler and have a cabinet with cards Caller ID can be passed using CLASS trunk cards.

As the OP hasn't told us what all may be riding the DS1 circuit, it's hard to tell whether this is the most cost effective solution.

I have to think, depending on mileage that costs for POTS versus T1 would compare well in this situation. Plus if you conference, the T1 channels would be much better volume wise.

Maybe we should hear what is riding the other channels.