We currently have a C3640 connected to our PBX Siemens Hicom125, through a VIC-2BRI-NT/TE.
The port used on the BRI is configured as NT.
Call admission is working from IPPhone to PBX-analog phones, but without any ringback on IPPhone speaker.
We already tried all famous progress_ind commands, but it does not change anything.
WHAT'S GOING WRONG ???
Sample of our config:
interface BRI2/0
no ip address
isdn switch-type basic-net3
isdn overlap-receiving T302 4000
isdn protocol-emulate network
isdn layer1-emulate network
isdn incoming-voice voice
isdn sending-complete
isdn skipsend-idverify
line-power
!
voice-port 2/0/0
disc_pi_off
echo-cancel coverage 24
compand-type a-law
cptone LU
bearer-cap Speech
!
dial-peer voice 200 pots
*** Extension 2xx are internal analog phones, connected to our PBX ***
destination-pattern 2..
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
direct-inward-dial
port 2/0/0
forward-digits all
!
dial-peer voice 500 voip
destination-pattern 5..
progress_ind setup enable 3
session target ipv4:192.168.55.2
dtmf-relay cisco-rtp h245-alphanumeric
req-qos guaranteed-delay
codec g711alaw
!
AND ABOUT THE ROUTER VERSION:
Version 12.1(5)YD2 (C3640-IS56I-M), RELEASE SOFTWARE (fc2)
