Доброго времени суток!
Имею цыску 1751 с иосом Cisco IOS Software, C1700 Software (C1700-IPVOICE-M), Version 12.3(11)T11, RELEA                                                                    SE SOFTWARE (fc3)

Вот конфиг

Сейчас она включена по схеме такой
Абон. Шлюз---sip/rtp----Asterisk-----sip/rtp-----CISCO---sip/rtp----PSTIN
данная схема замечательно работает, звонки ходят в обе стороны, но есть одно но, астериск выступает в данном случае в качестве проксисервера, что не есть хорошо, стоит задача разгрузить астериск с использованием реинвайта, и привести всё вот к такой схеме:
Абон. Шлюз---sip----Asterisk
....||
so.Reinvite
....||
....+---rtp---CISCO---rtp----PSTIN

version 12.3
service nagle
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime localtime
service timestamps log datetime localtime
service password-encryption
service sequence-numbers
no service dhcp
!
hostname PROXY
!
boot-start-marker
boot system tftp c1700-ipvoice-mz.123-11.T11.bin 85.202.0.10
boot-end-marker
!
logging buffered 4096 debugging
!
memory-size iomem 20
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
aaa new-model
!
!
aaa session-id common
ip subnet-zero
ip cef
!
!
!
!
no ip domain lookup
no ftp-server write-enable
!
!
!
voice service voip
allow-connections sip to sip
redirect ip2ip
fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none
sip
  registrar server expires max 3600 min 3600
  redirect contact order best-match
  no call service stop
!
!
!
voice class codec 1
codec preference 1 g711alaw
codec preference 2 g729r8
!
!
!
!
!
!
!
!
!
username max privilege 15 password 7 0827455C0C1D04121F0402
archive
log config
  hidekeys
!
!
!
!
interface FastEthernet0/0
no ip address
speed auto
!
interface FastEthernet0/0.1
description ASTERISK
encapsulation dot1Q 3
ip address хх.хх.0.11 255.255.255.0
!
interface FastEthernet0/0.2
description VOIP-OPERATOR
encapsulation dot1Q 719
ip address 172.16.123.62 255.255.255.252
!
ip classless
ip route 0.0.0.0 0.0.0.0 хх.хх.0.1
ip route 10.9.0.8 255.255.255.252 хх.хх.0.8
ip route 10.15.0.0 255.255.0.0 172.16.123.61
ip route 10.101.0.0 255.255.0.0 172.16.123.61
ip route 10.102.0.0 255.255.0.0 172.16.123.61
ip route 10.103.0.0 255.255.0.0 172.16.123.61
ip route 10.104.0.0 255.255.0.0 172.16.123.61
ip route 10.105.0.0 255.255.0.0 172.16.123.61
ip route 10.106.0.0 255.255.0.0 172.16.123.61
ip route 10.107.0.0 255.255.0.0 172.16.123.61
ip route 10.108.0.0 255.255.0.0 172.16.123.61
ip route 172.16.0.0 255.255.0.0 172.16.123.61
ip route 172.17.0.0 255.255.0.0 172.16.123.61
ip route 172.18.0.0 255.255.0.0 172.16.123.61
ip route 172.19.0.0 255.255.0.0 172.16.123.61
ip route 172.20.0.0 255.255.0.0 172.16.123.61
ip route 172.21.0.0 255.255.0.0 172.16.123.61
ip route 172.22.0.0 255.255.0.0 172.16.123.61
!
no ip http server
!
!
control-plane
!
!
!
!
!
dspfarm transcoder maximum sessions 16
dspfarm rtp timeout 41728
dspfarm
!
!
dial-peer voice 1 voip
description ASTERISK
destination-pattern 124[5,7].
progress_ind setup enable 1
progress_ind progress enable 1
progress_ind connect enable 1
redirect ip2ip
translate-outgoing called 1
session protocol sipv2
session target ipv4:хх.хх.0.6:5060
session transport udp
incoming called-number .
dtmf-relay rtp-nte
codec g711alaw
fax rate 14400
fax protocol pass-through g711alaw
no vad
!
dial-peer voice 2 voip
description VOIP-OPERATOR
preference 5
destination-pattern .
progress_ind setup enable 3
progress_ind progress enable 8
redirect ip2ip
voice-class codec 1
session protocol sipv2
session target ipv4:10.101.1.33:5060
session transport udp
dtmf-relay rtp-nte
fax rate 14400
fax nsf 000000
fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none
no vad
!
sip-ua
nat symmetric check-media-src
retry invite 3
retry response 3
retry bye 3
retry cancel 3
timers trying 1000
sip-server ipv4:xx.xx.0.6
!
!
telephony-service
ip source-address xx.xx.0.11 port 2000
sdspfarm units 1
sdspfarm transcode sessions 128
sdspfarm tag 1 MTPNEWONE
max-conferences 4
transfer-system full-consult
!
!
line con 0
line aux 0
line vty 0 4

end