Asterisk PBX + cisco vg224

Помогите подружить Asterisk и VG224

Попробовал сам, но вот только 3 номера регистрируються в астериске, а остальные после небольшого времени отпадают. убьешь номер создашь опять виден какое то время

Кусок конфига:

!
version 12.4
no service pad
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
no service password-encryption
!
hostname VG224
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
resource policy
!
clock timezone GMT 2
ip subnet-zero
ip cef
no ip dhcp use vrf connected
!
!
!
!
voice-card 0
!
!
voice call send-alert
voice rtp send-recv
!
voice service pots
!
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
sip
bind control source-interface FastEthernet0/0
bind media source-interface FastEthernet0/0
registrar server
!
!
voice class codec 1
codec preference 1 g711ulaw
!
archive
log config
hidekeys
!
!
!
interface FastEthernet0/0
ip address 192.168.1.2 255.255.255.0
duplex half
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.1.1
!
ip http server
!
dialer-list 1 protocol ip permit
!
!
control-plane
!
!
voice-port 2/0
timeouts call-disconnect 5
station-id name P0-2000
station-id number 2000
caller-id enable
!
dial-peer voice 100 voip
huntstop
destination-pattern ^[0-9].T
voice-class codec 1
session protocol sipv2
session target sip-server
dtmf-relay sip-notify rtp-nte
no vad
!
dial-peer voice 11 pots
destination-pattern 2000
port 2/0
authentication username 2000 password ххххххххххххххх
!
!
sip-ua
authentication username xxxxxxx password ххххххххххххххх
retry invite 2
retry response 10
timers trying 1000
timers connect 100
timers connection aging 30
timers register 100
mwi-server ipv4:192.168.1.1 expires 3600 port 5060 transport udp
registrar ipv4:192.168.1.1:5060 expires 3600
sip-server ipv4:192.168.1.1
offer call-hold conn-addr
!
!
line con 0
line aux 0
line vty 0 4
password xxxxxxx
login
!
ntp clock-period 17180221
ntp server 192.168.1.1
end