Trunk to trunk routing

[vulcanfan]

Hi,

We have a MICS 'Modular Plus' (as its called in the UK) Norstar system, with PRI ISDN and AC15 lines on it.

I'm trying to route between ISDN and AC15 trunks. For example, so an incoming call on AC15 has the incoming DDI digits analysed for a destcode, and if it's the ISDN destcode then the call is routed out over ISDN. And vice-versa, all without attempting termination on any local extension, or using F84 divert or similar.

Is that possible? Seems that it insists on trying to terminate incoming calls directly onto local extensions only.

Many thanks!

 

[Shaun E]

I'm not in the UK so not too familiar with the MICS over there but I seem to recall the UK variant didn't allow trunk-to-trunk routing or even the ability to transfer/forward a call externally due to some local regulations.

 

[Firebird Scrambler]

I used to set something up, where you could transfer and route a call on the UK versions. I think you need to setup the remote packages on the two trunks to allow access through them.

 

[Firebird Scrambler]

The attached files should help you.

 

[vulcanfan]

@Firebird Scrambler Thanks very much for the docs, I'll need to set some time aside to read the large one at least.
Incidentally, is Release 3 version the latest that the UK received for the Modular Plus?

I have tried the Remote Packages feature, but only partially got it working. For example, an incoming call on AC15 (3 Received digits) does indeed 'seize' an outbound ISDN trunk, but doesn't pass out any digits. By 'seize' in ISDN terms I mean I can see the Norstar sending SETUP-REQ but with no 'called number' field. The 'CO' at the remote end (which is an Avaya IP Office in CO mode) responds with SETUP-ACK and waits for subsequent overlap digits, but the Norstar never sends any digits and the call fails/disconnects. It seems that the Norstar is incapable of dialling overlap digits out on PRI (which I did read somewhere) but if it can't pass digits received on AC15 over to an outbound ISDN trunk then not sure what use the Remote Access Package brings.

The other 'high-risk' option is to acquire a MICS6 or 7 cartridge from the US and see if that works in the CCU we have, and see if that works any better (eg supporting overlap digits). Our Norstars are on private networks, so don't need to 'UK' compliant at all, and are being used as glorified ISDN/AC15 converters really. The only way we can work out how to integrate our legacy AC15 network into a relatively newer Avaya IP Office setup.

Many thanks in advance!