a customer has an 8 port Analog mod

[jsaad]

a customer has an 8 port Analog mod on a norstar, he connected them to a CISCO router for VOIP (i think FXS). If you call one of the extension, the router answers with "Please enter the number you wish to reach" anyways, they claim the norstar won't hang up b/c when you try the extension again it just rings and rings. maybe 20 minutes later it will answer. does this sound like the Norstar or the Cisco not answering. Customer was saying there should be some battery reversal or answer supervision. I was never familiar with anything like this on a norstar. i said to them that on a norstar, if you hear ringback the phone (whether it be analog or a digital phone) should be ringing on the other end.

any ideas?

 

[Arr]

jsaad,
I think you are 100% right where the ASM is concerned. If you hear ringing when the DN is dialed then the N* thinks the far end is idle. Disconnect supervision is not supported in an ASM or ATA2. It is there only with the VM interface unit. It would seem to me that the Cisco needs to sense the disconnect at the set end, and hang up the ASM port .. no need to provide back to the ASM a disconnect signal. It would appear by your description that it is simply timing out.
Suggest to your customer that MCK would be a better solution providing the full digital set to the far end. MCK rules!

Cheers
PhM

 

[AlquestTech]

Or they could use PRI's for VOIP with the Cisco router...
Then there is no mechanical supervision.


I don't know about the POTS/Analog cards on a ciscop router, but I do know that we are using PRI and that the router does actually provide/progress comfort tnes. So it is important to be certain where you are getting the tones from.

I am just guessing, but wouldn't it be better to interface using lines.... Where are they connecting to using VOIP?

When you place a call to these extensions, how is it hitting the router?

 

[jsaad]

what if I did this? I take the 8 analog ports from the ASM and feed them into two LS/DS cards (that provide supervision). THen I take the LS/DS cards and feed them into the router FXO ports.

Currently you ring the analog port and the ROuter's IVR answers. The analog card does not provide disconnect supervision. So If I put a trunk card in between that provides a disconnect supervision, then the CISCO will know to hang up the line?

Arr?

 

[Arr]

JSAAD,
Whee!

OK.. so if an analog port gets back fed to an analog CO card port...
So you would need another ATA port to program into the CISCO... per CO port. Suggest for this experiment ATA2s be tried instead of the ASM.
I'm not at all sure that the Norstar LS/DS trunk card will generate a disconnect signal. Example: I once hooked up the IATA to an unused trunk port in a CICS Rls6 to access the IRAD from the CP AA. Got through fine ONCE. The trunk then stayed busy for two weeks until I made it to site and disconnected the cross connect wire. Did the IATA not hang up or did the LS/DS trunk card not get a disconnect signal from the IATA? ?? Didn't do it again.
It also would likely not be a hard thing to design a simple circuit that would sense the change from off hook voltage to on hook voltage and wink a leg.. may design it myself and post it. That would give CISCO its disconnect signal.

Keep us posted eh?

Cheers
PhM