atcomsystems.ca/forum Forums TDM Business Telephone Systems Panasonic Telephones & Systems NS1000 with SIP NS-PRI appliance - Can also support additional SIP Trunk to PBX?

I have a customer with NS-1000 (with 2x 620 exp cabinets) and I think NS-8290 PRI module - I probably have numbers transposed on the PRI model number. System is upgraded to final firmware V9 so all licenses are opened up.

Customer has us installing asterisk (Grandstream) PBX to support SIP DECT portable handsets since they are unable to get replacements, and wants to slowly move away from Pana as the NS phones die. PRI can stay on NS1000 tho they will eventually migrate to SIP Trunks, likely on the Grandstream to phase out the pana. Customer wants to keep their desk phones (to get more time out of the investment) but are desperate for new portables.
I'm familiar (but not fluent) with Panasonic, but not with their version of SIP implementations.

When I try to add a virtual card and point it to the asterisk pbx, I use a new card (the PRI uses the first 2 virtual cards) - which does come INS when put in service - but when I do this, their PRI stops working. Its a care home so I can't take the system down very long, and I suspect it has something to do with trunk grouping but that's a guess.

I see my options are get the SIP trunk working between the NS1000 and Grandstream so the portables can make/receive calls to desk phones and outside lines, or migrate them to SIP Trunks from the telco (eliminating the SIP connection to Pana for PRI) and then set up SIP between GS and Pana for all desk phone calls.

Anyone might be able to assist or give a push in the right direction?
Thanks, Marty

Hi Marty - you're probably right about the line groups. I believe we've spoken before, if you still have my contact info feel free to give me a shout...