Following is a config for SCCP controlled faxing on the FXS port and MGCP controlled ISDN BRI. This had a SuperG3 fax on the FXS port 0/3/0 and worked fine at SG3 speeds after we added 'no fax-relay sg3-to-g3' under voice service voip settings. Putting this command back to the default would force the fax back to to normal T30 speeds.
Due to some other issues the customer later put the FXS port under MGCP control and this worked fine at SG3 speeds as well.
!
network-clock-participate wic 1
network-clock-participate wic 2
network-clock-select 1 BRI0/1/0
!
!
stcapp register capability 0/3/2 modem-passthrough
stcapp register capability 0/3/1 modem-passthrough
stcapp register capability 0/3/0 modem-passthrough
stcapp register capability 0/3/3 modem-passthrough
stcapp ccm-group 1
stcapp
!
stcapp feature access-code
prefix *
!
stcapp feature speed-dial
prefix #
!
isdn switch-type basic-net3
!
voice-card 0
no dspfarm
dsp services dspfarm
!
!
!
voice service voip
no fax-relay sg3-to-g3
modem passthrough nse codec g711ulaw redundancy maximum-sessions 5
!
!
interface BRI0/1/0
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn bind-l3 ccm-manager service mgcp
isdn static-tei 0
!
interface BRI0/1/1
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn bind-l3 ccm-manager service mgcp
isdn static-tei 0
!
!
voice-port 0/1/0
compand-type a-law
cptone AU
bearer-cap Speech
!
voice-port 0/1/1
compand-type a-law
cptone AU
bearer-cap Speech
!
!
voice-port 0/3/0
cptone AU
timeouts ringing infinity
timing hookflash-in 400 10
caller-id enable
!
voice-port 0/3/1
cptone AU
timeouts ringing infinity
timing hookflash-in 400 10
caller-id enable
!
voice-port 0/3/2
timeouts ringing infinity
timing hookflash-in 400 10
caller-id enable
!
voice-port 0/3/3
timeouts ringing infinity
!
ccm-manager fallback-mgcp
ccm-manager redundant-host X.X.X.X
ccm-manager mgcp
no ccm-manager fax protocol cisco
ccm-manager music-on-hold
!
mgcp
mgcp call-agent X.X.X.X 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp rtp unreachable timeout 1000 action notify
mgcp modem passthrough voip mode nse
mgcp ip qos dscp cs3 signaling
mgcp package-capability rtp-package
no mgcp package-capability res-package
mgcp package-capability sst-package
no mgcp package-capability fxr-package
mgcp package-capability pre-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp fax rate 14400
no mgcp fax t38 ecm
mgcp fax t38 inhibit
mgcp rtp payload-type g726r16 static
mgcp bind control source-interface Loopback2
mgcp bind media source-interface Loopback2
!
mgcp profile default
!
sccp local GigabitEthernet0/1.300
sccp ccm X.X.X.X identifier 1 version 4.1
sccp ccm X.X.X.X identifier 2 version 4.1
sccp
!
sccp ccm group 1
associate ccm 1 priority 1
associate ccm 2 priority 2
!
!
dial-peer voice 51 pots
service stcapp
port 0/3/0
!
dial-peer voice 52 pots
service stcapp
port 0/3/1
!
dial-peer voice 53 pots
service stcapp
port 0/3/2
!
dial-peer voice 54 pots
service stcapp
port 0/3/3
!
