SIP trunks.. NNI or UNI ?

[ferhan]

Hello,
New to Mitel/VOIP world. We have a 3300 MXe installed at a site. Client is installing SIP trunks and service provider specifically asked for full compatibility with NNI protocol.
I have no idea what protocol does mitel follow but according to official mitel statement through regional support they don't support NNI.
Service provider will be using CISCO 3925 router as termination point.
My question is: is there anyway to make it work with mitel 3300 mxe in present scenario ?

 

[RotaryDialTommy]

Why would they install those SIP trunks after you told them NNI is not supported ?

 

[ferhan]

Because its the only available option. The site is at a very remote area.

 

[wireman50]

I guess you could try a gateway compatible with the Cisco kit to sit between the Cisco and the 3300 making sure the gateway is interoperable with both bits of kit.