Hi All,
Kindly note that we have the below topology:
PSTN---->H323 VGW-1(E1)----->CUCM 8.5------>UCCX 8.5------>Agent (CAD & CIPC)
but we have a problem that some calls answered by the the agent but after some time it disconnected with Disconnect Cause=41 & Disconnect Cause=31.
and the configuration on VGW-1 like below:
hostname VOICE-GATEWAY-1
!
boot-start-marker
boot-end-marker
!
!
card type e1 0 0
!
no aaa new-model
clock timezone Amman 2 0
network-clock-participate wic 0
!
no ipv6 cef
ip source-route
ip cef
!
!
!
!
multilink bundle-name authenticated
!
!
!
isdn switch-type primary-4ess
!
crypto pki token default removal timeout 0
!
!
voice-card 0
dsp services dspfarm
!
!
!
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
!
voice class codec 2
codec preference 1 g711alaw
codec preference 2 g711ulaw
!
voice class h323 10
h225 timeout tcp establish 3
!
!
!
!
voice translation-rule 1
rule 1 /5679141/ /*150/
rule 2 /5100731/ /7311/
rule 3 /5100732/ /7024/
!
voice translation-rule 2
rule 1 /7.../ /5679141/
rule 2 /7311/ /5100731/
!
voice translation-rule 3
rule 1 /\(.*\)/ /9\1/
!
!
voice translation-profile INC
translate calling 3
translate called 1
!
voice translation-profile OUT
translate calling 2
!
voice translation-profile Prefix_9
translate calling 3
!
!
hw-module pvdm 0/0
!
hw-module pvdm 0/1
!
!
!
!
redundancy
!
!
controller E1 0/0/0
pri-group timeslots 1-31
!
bridge irb
!
!
!
!
interface Embedded-Service-Engine0/0
no ip address
shutdown
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/0.19
encapsulation dot1Q 19
bridge-group 19
!
interface GigabitEthernet0/0.20
encapsulation dot1Q 20
bridge-group 20
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
!
interface GigabitEthernet0/1.19
encapsulation dot1Q 19
bridge-group 19
!
interface GigabitEthernet0/1.20
encapsulation dot1Q 20
bridge-group 20
!
interface Serial0/0/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice
isdn bchan-number-order ascending
no cdp enable
!
interface BVI19
ip address 192.168.19.1 255.255.255.0
!
interface BVI20
ip address 192.168.20.1 255.255.255.0
h323-gateway voip interface
h323-gateway voip bind srcaddr 192.168.20.1
!
ip forward-protocol nd
!
no ip http server
no ip http secure-server
!
ip route 0.0.0.0 0.0.0.0 192.168.20.3
!
!
!
!
control-plane
!
bridge 19 protocol ieee
bridge 19 route ip
bridge 20 protocol ieee
bridge 20 route ip
!
voice-port 0/0/0:15
!
voice-port 0/1/0
echo-cancel coverage 64
shutdown
!
voice-port 0/1/1
!
no ccm-manager fax protocol cisco
!
no mgcp package-capability res-package
no mgcp timer receive-rtcp
!
mgcp profile default
!
!
dial-peer voice 2 pots
translation-profile incoming INC
incoming called-number .
direct-inward-dial
!
dial-peer voice 150 voip
preference 2
destination-pattern *150
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
session target ipv4:192.168.20.10
voice-class codec 2
voice-class h323 10
dtmf-relay h245-alphanumeric
no vad
!
dial-peer voice 151 voip
preference 1
destination-pattern *150
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
session target ipv4:192.168.20.11
voice-class codec 2
voice-class h323 10
dtmf-relay h245-alphanumeric
no vad
!
dial-peer voice 1 voip
incoming called-number .
dtmf-relay h245-alphanumeric
codec g711alaw
no vad
!
dial-peer voice 9 pots
destination-pattern 9T
port 0/0/0:15
!
dial-peer voice 7000 voip
preference 1
destination-pattern 7...
session target ipv4:192.168.20.11
dtmf-relay h245-alphanumeric
codec g711alaw
no vad
!
!
gateway
media-inactivity-criteria rtp
timer media-inactive 10
timer receive-rtp 1200
!
!
gatekeeper
shutdown
!
!
telephony-service
max-conferences 8 gain -6
transfer-system full-consult
!
!
ntp master 9
ntp update-calendar
ntp server ip 192.168.20.3
end
VOICE-GATEWAY-1#sh version
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.1(4)M4, RELEASE SOFTWARE (fc1).
Network failure. 
