Vi faccio i miei complimenti x questo grande forum!!
ora però passo a spiegarmi cio che sto facenda ...

sto implementando un laboratorio con i seguenti device:
- cisco 3745 che fa da ccme (simulato con dynamips)
- cisco 1841 che fa da gateway
- cisco catalyst 3750
- ip phone 7940
L' infrastruttura dati gia funziona perfettamente uscendo anche all'esterno tramite nat; mentre x la voce riesco solo a fare chiamate interne ma non riesco a creare una connessione con un server Sip esterno (voipstunt)
proprio x questo vi chiedo una mano..

la mia domanda è: come verifico se la connessione con il server esterno funziona?
Vi allego anche la configurazione del ccme cosi se riscontrate errori magari me li corregete...

Vi ringrazio in anticipo..
rome_call_ex#sh ru
Building configuration...
Current configuration : 3177 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname rome_call_ex
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
clock timezone rome -23
ip cef
!
!
!
!
ip name-server 10.0.0.100
multilink bundle-name authenticated
!
!
!
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
!
!
username andrea privilege 15 secret 5 $1$StX4$0WeS4a08BSAKzASbAuDxt.
archive
log config
hidekeys
!
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.100
encapsulation dot1Q 10
ip address 192.168.0.100 255.255.255.0
!
interface FastEthernet0/0.200
encapsulation dot1Q 20
ip address 10.0.0.100 255.255.255.0
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Dialer0
no ip address
!
ip default-gateway 192.168.0.50
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 192.0.0.50
!
ip http server
no ip http secure-server
!
!
!
tftp-server flash:P00308000500.bin
tftp-server flash:P00308000500.loads
tftp-server flash:P00308000500.sb2
tftp-server flash:P00308000500.sbn
tftp-server flash:ring1.raw
tftp-server flash:P00307020300.loads
tftp-server flash:P00307020300.bin
tftp-server flash:P00307020300.sbn
tftp-server flash:P00307020300.sb2
tftp-server flash:cmterm-nokia_s60_001-sccp.cop.sgn
!
control-plane
!
!
sccp local FastEthernet0/0.200
sccp
!
sccp ccm group 20
!
dial-peer cor custom
name interni
name cell
name nazionali
!
!
dial-peer cor list interni
member interni
!
dial-peer cor list nazionali
member interni
member nazionali
!
!
dial-peer voice 1000 voip
corlist outgoing nazionali
description International
destination-pattern 0.T
session protocol sipv2
session target dns:sip.voipstunt.com
dtmf-relay h245-alphanumeric
!
dial-peer voice 2000 voip
corlist outgoing nazionali
voice cut-through alert
destination-pattern .T
session protocol sipv2
session target dns:sip.voipstunt.com
dtmf-relay h245-alphanumeric
!
!
sip-ua
authentication username xxxx password 7 09474704160B18
registrar dns:sip.voipstunt.com:5060 expires 3600
sip-server dns:sip.voipstunt.com:5060
!
!
telephony-service
load 7960-7940 P00307020300
load 7931 cmterm-7931-sccp.8-2-2SR2
max-ephones 24
max-dn 50
ip source-address 10.0.0.100 port 2000
auto assign 1 to 20
user-locale IT
max-conferences 4 gain -6
transfer-system full-consult
create cnf-files version-stamp Jan 01 2002 00:00:00
!
!
ephone-template 1
fastdial 1 20
type 7940
!
!
ephone-dn 5
number 5
!
!
ephone-dn 7
number 7
label andrea
name gino
corlist incoming nazionali
!
!
ephone-dn 20
!
!
ephone 1
mac-address 0015.FAC4.1C8C
type 7940
auto-line incoming
!
!
!
ephone 2
mac-address 0018.BA72.2180
type 7940
auto-line incoming
button 1:5
!
!
!
ephone 3
mac-address 0015.C6FF.6C84
type 7940
auto-line incoming
button 1:7
!
!
!
ephone 4
mac-address 0012.7F8D.AA0B
type 7912
!
!
!
line con 0
line aux 0
line vty 0 4
login local
!
ntp server 192.168.0.6
!
end