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Cisco 2811 SCCP Gateway issue

Hello!

At this moment I'm in processing of configure Cisco 2811 router (C2800NM-IPVOICEK9-M, Version 12.4(24)T8) as SCCP GW (FXS port) for Cisco UCM 9.1.2. I use VIC2-2FXS card and both port are successfully registered on CUCM.

But I have some problem with call between analog phone on SCCP FXS port and IP phone. When I try to call from analog FXS SCCP phone to IP phone than call disconnect after 1-2 ring, when I try to call from IP phone to analog FXS SCCP phone than no ring, but if I pick up the analog telephone than I hear voice between analog and IP phone.

I don't understand what is problem?

Here is my GW configuration:

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname c2811

!

boot-start-marker

boot-end-marker

!

logging message-counter syslog

enable secret 5 $1$fSeI$ZMOmYT3mF4mIfZt7XK82f/

!

no aaa new-model

!

dot11 syslog

ip source-route

!

ip traffic-export profile 1111 mode capture

  bidirectional

!        

!

ip cef

!

no ip domain lookup

ip domain name gazprom.demo

no ipv6 cef

multilink bundle-name authenticated

!

stcapp ccm-group 1

stcapp

!

stcapp feature access-code

!

stcapp feature speed-dial

!

stcapp supplementary-services

port 0/0/0

  fallback-dn 1008

port 0/0/1

  fallback-dn 1009

!

voice service voip

fax protocol cisco

!

voice-card 0

!

username XXXXXXX privilege 15 secret 5 XXXXXXXXXX

archive

log config

  hidekeys

!

interface FastEthernet0/0

ip address 10.100.1.37 255.255.255.0

ip traffic-export apply 1111 size 4096

duplex auto

speed auto

!        

interface FastEthernet0/1

no ip address

shutdown

duplex auto

speed auto

!

ip forward-protocol nd

ip route 0.0.0.0 0.0.0.0 10.100.1.254

!

no ip http server

no ip http secure-server

!

control-plane

!

voice-port 0/0/0

cptone RU

timeouts ringing infinity

timing hookflash-in 1550 0

caller-id enable

!

voice-port 0/0/1

cptone RU

timeouts ringing infinity

timing hookflash-in 1550 0

caller-id enable

!

ccm-manager sccp local FastEthernet0/0

!

sccp local FastEthernet0/0

sccp ccm 10.100.1.32 identifier 1 version 7.0

sccp ccm 10.100.1.31 identifier 2 version 7.0

sccp

!

sccp ccm group 1

bind interface FastEthernet0/0

associate ccm 1 priority 1

associate ccm 2 priority 2

switchback method graceful

!        

dial-peer voice 100 pots

service stcapp

port 0/0/0

!

dial-peer voice 101 pots

service stcapp

port 0/0/1

!

line con 0

login local

line aux 0

line vty 0 4

login local

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