I think we had a router failure

Incoming SIP trunk calls to system are good
Incoming SIP trunk calls to off prem SMT are no good
Internal calls from system digital phones to off prem SMT are no good

We replaced a Ubiquiti, which had worked nicely for about six months, with a Draytek

We have the proper port forwarding ( 6000, 9000 ) set to the MP

Just lousy calls to and from SMT phones at 5 diff sites

Anyone with thoughts on this ?