VG224 fax modem issues

[jcs64]

We have a cisco UCCE platform and an associated vg224 analog gateway. The analog ports are used training on POS devices. These devices have difficulty connecting via these ports and when they do they cannot achieve speed in excess of 1200 baud. Any help is greatly appreciated.
The configuration is as follows:


Current configuration : 3904 bytes
!
! Last configuration change at 16:00:23 UTC Tue Jun 16 2009
! NVRAM config last updated at 15:56:19 UTC Tue Jun 16 2009
!
version 12.4
no service pad
service timestamps debug datetime localtime
service timestamps log datetime localtime
no service password-encryption
!
hostname vs-phxaa01
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$qwj1$Lcffg.BvSfsoDp65bFFeG/
enable password cisco
!
no aaa new-model
!
resource policy
!
ip subnet-zero
!
voice-card 0


interface Loopback0
no ip address
!
interface FastEthernet0/0
ip address 172.28.125.96 255.255.0.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
ip classless
ip route 0.0.0.0 0.0.0.0 172.28.125.1
!
ip http server
no ip http secure-server
!
logging trap notifications
logging source-interface Loopback0
logging 172.28.125.9
logging 172.28.125.99
snmp-server community VZBVoIP RO
snmp-server community shoregroup RW
snmp-server location UCC Equipment Room
snmp-server contact VZB TAC
snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart
snmp-server enable traps config
snmp-server enable traps envmon fan shutdown supply temperature
snmp-server enable traps flash insertion removal
snmp-server enable traps entity
snmp-server enable traps rtr
snmp-server enable traps syslog
!
!
control-plane
!
!
voice-port 2/0
!
voice-port 2/1
!
voice-port 2/2
!
voice-port 2/3
!
voice-port 2/4
!
voice-port 2/5
!
voice-port 2/6
!
voice-port 2/7
!
voice-port 2/8
!
voice-port 2/9
!
voice-port 2/10
!
voice-port 2/11
!
voice-port 2/12
!
voice-port 2/13
!
voice-port 2/14
!
voice-port 2/15
!
voice-port 2/16
!
voice-port 2/17
!
voice-port 2/18
!
voice-port 2/19
!
voice-port 2/20
!
voice-port 2/21
!
voice-port 2/22
!
voice-port 2/23
!
ccm-manager redundant-host 172.28.125.64 172.28.125.62
ccm-manager mgcp
ccm-manager music-on-hold
ccm-manager config server 172.28.125.63
ccm-manager config
ccm-manager config dialpeer-prefix
!
mgcp
mgcp call-agent 172.28.125.63 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 package-capability rtp-package
no mgcp package-capability res-package
mgcp package-capability sst-package
no mgcp package-capability fxr-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp fax t38 inhibit
mgcp rtp payload-type g726r16 static
!
mgcp profile default
!
!
!
dial-peer voice 99920 pots
service mgcpapp
port 2/0
!
dial-peer voice 99921 pots
service mgcpapp
port 2/1
!
dial-peer voice 99922 pots
service mgcpapp
port 2/2
!
dial-peer voice 99923 pots
service mgcpapp
port 2/3
!
dial-peer voice 99924 pots
service mgcpapp
port 2/4
!
dial-peer voice 99925 pots
service mgcpapp
port 2/5
!
dial-peer voice 99926 pots
service mgcpapp
port 2/6
!
dial-peer voice 99927 pots
service mgcpapp
port 2/7
!
dial-peer voice 99928 pots
service mgcpapp
port 2/8
!
dial-peer voice 99929 pots
service mgcpapp
port 2/9
!
dial-peer voice 999210 pots
service mgcpapp
port 2/10
!
dial-peer voice 999211 pots
service mgcpapp
port 2/11
!
dial-peer voice 999212 pots
service mgcpapp
port 2/12
!
dial-peer voice 999213 pots
service mgcpapp
port 2/13
!
dial-peer voice 999214 pots
service mgcpapp
port 2/14
!
dial-peer voice 999215 pots
service mgcpapp
port 2/15
!
dial-peer voice 999216 pots
service mgcpapp
port 2/16
!
dial-peer voice 999217 pots
service mgcpapp
port 2/17
!
dial-peer voice 999218 pots
service mgcpapp
port 2/18
!
dial-peer voice 999219 pots
service mgcpapp
port 2/19
!
!
!
line con 0
line aux 0
line vty 0 4
exec-timeout 0 0
password cisco
logging synchronous
login
transport input telnet
!
ntp clock-period 17179937
ntp server 192.168.133.1 prefer
ntp server 192.168.44.1
end

 

[trvlr1]

We had similar issues trying to fax to specific types of fax machines and fax servers, while others worked perfectly. Cisco insisted that upgrades to later releases would take care of these issues (after first telling us there was no issue with their hardware/software for 6 months)Upgrades did not fix the issue however and we now routinely install external lines for fax machines and have had no issues since. We will be upgrading this year to the latest releases on Call Manager, maybe that will fix the issue. Sorry this is not really a fix for your issues, more a work around. Hope it helps.

 

[jcs64]

That is the funny thing...faxes work fine...it is only when we try to do dial up on the POS devices that it won't connect.

 

[hanluc6933]

When you put a trace up and watch the POS call go out do you see all of the digits hit the gateway?

Also, this command may help

voice service voip
fax protocol pass-through g711ulaw
modem passthrough nse codec g711ulaw

Do the day and let the day do you.