Hello,
We are trying to integrate SIP phones (Grandstream GXP2140) to our Mitel 5000/250.
Node A: local node where the SIP phones exist
Node B: remote node
Everything works as expected when calling from any device type internally on node A.
When node B calls a SIP phone on node A, the phone will ring but not use the VM forwarding path unless it is set to immediate.
When node B calls a non-SIP phone on node A, everything works as expected.
Both systems are running firmware 6.0.11. System Forward Initiate is set to 15 on both systems.
Any ideas on how I could work around this? Is this a limitation of using SIP endpoints?
Thanks,