sundance-communications.com/forum Forums TDM Business Telephone Systems NEC Telephones & Systems NEC SV9100 trunk to trunk routing

Hi all,

I’m working with an NEC SV9100 connected to a Grandstream UCM via SIP trunk. Extension-to-extension dialing between the systems works fine. The SIP trunks are set to DDI type, nec side

Now I want to go a step further:
I’d like extensions on the Grandstream UCM to be able to dial external numbers using the PRI trunk connected to the SV9100. Essentially, the UCM will send the call via SIP to the SV9100, and the SV9100 will route it out through its PRI trunk, with no other user interaction.
Has anyone set up something similar?
How should I program the incoming call on sv9100 to achieve this?

Thanks in advance!

Hi

Totally doable but not simple, The NEC will need to see the 9 for an outside call echoed to the NEC (assuming you are using 9 as a line access code) if not the entire dialled number needs to be passed to the NEC. If you allow however many digits the extension numbers are on the NEC to go out via the ISDN connection then you can handle those as they come in to the NEC and then deal with the outbound calls from there. You need to look at Froute programming to learn how to handle this but it may be easier to get a qualified tech involved