TEL-14 and a Cisco VG310,320,350

I have a TEL-14 that was connected to the phone company and it worked just fine.

The station changed over to SIP and we connect our phone lines to a Cisco VG310 that was to provide the diletone. Well the call would come in and then hang up in 2 sec. We set vg310(config-voiceport)#loop-length long and that fixed the problem. By default the Cisco VG310 is set to loop short.

Instructions this is for a VG350 but is the same for the VG310 and 320

Loop-length configuration

The following configuration shows the use of the loop-length command:

vg350#config t

Enter configuration commands, one per line. End with CNTL/Z.

vg350(config)#voice-port 2/0/0

vg350(config-voiceport)#loop-length ?

long long loop length

short short loop length

vg350(config-voiceport)#loop-length long


vg350(config-voiceport)#no shut


*Mar 21 21:19:17.790: %LINK-3-UPDOWN: Interface Foreign Exchange Station 2/0/0, changed state to Administrative Shutdown

*Mar 21 21:19:19.094: %LINK-3-UPDOWN: Interface Foreign Exchange Station 2/0/0, changed state to up


default to loop-length short.