Here it is :
boot system flash:c2800nm-spservicesk9-mz.124-4.XC1.bin
!
isdn switch-type basic-net3
!
voice-card 0
no dspfarm
!
!
voice class h323 1
h225 timeout tcp establish 3
call preserve
!
interface BRI0/0/0
no ip address
isdn switch-type basic-net3
isdn overlap-receiving
isdn protocol-emulate network
isdn layer1-emulate network
isdn incoming-voice voice
isdn send-alerting
isdn sending-complete
isdn outgoing display-ie
isdn skipsend-idverify
line-power
!
interface BRI0/0/1
no ip address
isdn switch-type basic-net3
isdn overlap-receiving
isdn protocol-emulate network
isdn layer1-emulate network
isdn incoming-voice voice
isdn send-alerting
isdn sending-complete
isdn outgoing display-ie
isdn skipsend-idverify
line-power
!
ip route 0.0.0.0 0.0.0.0 X.Y.Z.W
!
!
voice-port 0/0/0
compand-type a-law
cptone CH
!
dial-peer voice 10 pots
tone ringback alert-no-PI
preference 1
destination-pattern 4976
direct-inward-dial
port 0/0/1
forward-digits all
!
dial-peer voice 20 voip
preference 1
destination-pattern 6671
progress_ind setup enable 3
voice-class h323 1
session target ipv4:10.16.246.41
codec g711ulaw
ip qos dscp cs5 media
no vad
!
dial-peer voice 21 voip
preference 2
destination-pattern 6671
progress_ind setup enable 3
session target ipv4:10.19.133.41
codec g711ulaw
ip qos dscp cs5 media
no vad
!
