My rural customer cannot get a PRI from VZ in his rural area, so VZ installed a T1. I'm having trouble talking their language, but they said they are sending and expecting a wink, but they don't call it E&M. DTMF is configured. When I dial a DID that they are supposed to route to that trunk group, we get a fast busy. VZ says that fast busy is the current overflow setting. When I DEBUG VOICE VTSP ALL, I see no activity for any inbound calls. I have only a very simple dial-peer:
dial-peer voice 90 pots
...which should basically generate dialtone to VZ when the trunk is seized.
The controller is set up this way:
controller T1 0/0/0
ds0-group 0 timeslots 1-24 type e&m-wink-start
Can you suggest some sort of debug where I can see the status of the trunks? Does anyone have any input into the configuration that may be specifically related to DMS-10 configurations? VZ says that this is a very old switch.
We finally resolved the problem. VZ, the carrier, had another customer in Colorado that experienced the same issue with a DMS10 to Cisco router running T1 CAS E&M-Wink. They said to change framing/linecode to sf/ami from esf/b8zs. And believe it or not, that's what worked. (They changed it on the DMS10 side, too.)
I wouldn't have believed it had I not seen it myself.