This config do not work, pl check and give me your instructions:
voice service voip
allow-connections sip to sip
registrar server expires max 600 min 60
transport switch udp tcp
voice class codec 1
codec preference 1 g711ulaw
codec preference 2 g711alaw
dial-peer voice 1 voip
voice-class codec 1
voice-class sip transport switch udp tcp
session protocol sipv2
session target sip-server
session transport udp
dtmf-relay sip-notify rtp-nte
dial-peer voice 2 voip
session target ipv4:192.168.0.8
incoming called-number .T
credentials username user password 083343570815514346 realm sipnet.ru
authentication username email@example.com password 7 0449041F0E2D181A5D
nat symmetric role passive
nat symmetric check-media-src
mwi-server dns:sipnet.ru expires 3600 port 5060 transport udp
registrar dns:sipnet.ru:5060 expires 3600
You have SIP Credentials in there. I would take this out while you are testing to avoid any possibly stops from this.
Also, if you are going from 6.1 to CUBE, I thought you could go directly from server to server and not through the IOS router?
Just create the sip trunk and point it to the CUBE server and vice versa.
Check your SIP security profile and see what port it is listening on. 5060 or 5070?
It also looks like you have SIP trunk to a provider?
Possibly if it could help if you give us some more background on how this is setup.
For example I have only one ip address from provider. In this case it will work isp(sip-server)-router with nat -callmanager (natted to external IP address of the router)-phones ?