asterisk users - Jun 2007 - Softphone behind NAT issues

We are trying to use a softphone from a location that is behind a
firewall. We are using x-lite as the softphone.

So far, we've been able to get the phone to register with the asterisk
server, and it can receive voice from the asterisk server (IE,
voicemail, etc).

However, asterisk can't hear anything from the softphone. We have used 2
different machines to test this on. We are watching the traffic and
noticed that there doesn't appear to be any rtp traffic going back to
asterisk (this is where we think the problem might be). The firewalls on
both sides have ports 5060, 10000-20000 and 3478 (STUN) open.

Out conf files are:
------------------
[sip.conf]

*[general]
context=incoming                ; Default context for incoming calls
bindport=5060                   ; UDP Port to bind to (SIP standard port
is 5060)
bindaddr=0.0.0.0                ; IP address to bind to (0.0.0.0 binds
to all)
srvlookup=yes                   ; Enable DNS SRV lookups on outbound calls
allow = all

[1000]
nat=yes
type=friend
secret=Polycom
context=internal
host=dynamic
canreinvite=no
mailbox=1000@default
callerid=TESTUSER1 <1000>
*
-----------------
[extensions.conf]
exten => 1000,1,Macro(stdexten,1000@default,SIP/1000)
----------------

[rtp.conf]

[general]
rtpstart=12000
rtpend=12005
dtmftimeout=3000

What are we missing?
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In [general] section:

externip=your_extern_ip_address
localnet=your_local_net/bits   i.e. 192.168.0.0/24

Try this...




On 6/12/07, Rob Schall <rschall@callone.net>
wrote:
>
>  We are trying to use a softphone from a location that is behind a
firewall.
> We are using x-lite as the softphone.
>
>  So far, we've been able to get the phone to register with the asterisk
> server, and it can receive voice from the asterisk server (IE, voicemail,
> etc).
>
>  However, asterisk can't hear anything from the softphone. We have used
2
> different machines to test this on. We are watching the traffic and noticed
> that there doesn't appear to be any rtp traffic going back to asterisk
(this
> is where we think the problem might be). The firewalls on both sides have
> ports 5060, 10000-20000 and 3478 (STUN) open.
>
>  Out conf files are:
>  ------------------
>  [sip.conf]
>
>  [general]
>  context=incoming                ; Default context for incoming calls
>  bindport=5060                   ; UDP Port to bind to (SIP standard port
is
> 5060)
>  bindaddr=0.0.0.0                ; IP address to bind to (0.0.0.0 binds to
> all)
>  srvlookup=yes                   ; Enable DNS SRV lookups on outbound calls
>  allow = all
>
>  [1000]
>  nat=yes
>  type=friend
>  secret=Polycom
>  context=internal
>  host=dynamic
>  canreinvite=no
>  mailbox=1000@default
>  callerid=TESTUSER1 <1000>
>
>  -----------------
>  [extensions.conf]
>  exten => 1000,1,Macro(stdexten,1000@default,SIP/1000)
>  ----------------
>
>  [rtp.conf]
>
>  [general]
>  rtpstart=12000
>  rtpend=12005
>  dtmftimeout=3000
>
>  What are we missing?
>
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On 12 Jun 2007, at 17:53, Rob Schall wrote:
> We are trying to use a softphone from a location that is behind a  
> firewall. We are using x-lite as the softphone.
Alternatively you could use an IAX softphone. They generally don't  
have a problem with NAT or firewalls.

Tim Panton

www.mexuar.net
www.westhawk.co.uk/