Freeswitch not accepting incoming SIP call (480 Temporarily Unavailable)

[paulw]

Hi -

Over the weekend I installed FreeSWITCH on an existing 1.2.3-RC1 system.  I am able to register with my SIP provider and make outgoing calls, but cannot receive incoming calls.  Here is my setup.

pfSense 1.2.3-RC1
  Firewall/WAN
  - Pass TCP/UDP 5060-5090
  - Pass UDP 16384-65535
  FreeSWITCH 0.9.5
  - Bound to WAN adapter
  - Gateway to SIP provider (registers OK)
  - Extension 100 can make outgoing calls OK
  - Public dialplan
    . 100, enabled, order 000
    . condition destination_number ^(my_phone_number)$ order 000
    . action transfer 100 XML default order 000

So, I thought I would monitor traffic on the WAN interface with packet capture.  I can see the invite from my SIP provider, followed by a "trying" response from FreeSWITCH, but FreeSWITCH sends a "temporarily unavailable" message back to my SIP provider.

SIP_PROVIDER > FreeSWITCH Request-Line: INVITE
    sip:gw+sip.voip.com@111.222.333.444:5080;transport=udp SIP/2.0

FreeSWITCH > SIP_PROVIDER Status-Line: SIP/2.0 100 Trying

FreeSWITCH > SIP_PROVIDER Status-Line: SIP/2.0 480 Temporarily Unavailable

The reason in the last line is reported as "Reason: Q.850;cause=16;text="NORMAL_CLEARING"", though I'm not sure if this is very helpful.

Any ideas on what I'm missing here, to accept incoming calls?

Thanks!

Paul

[paulw]

<sigh>responding to my own post.  On the public dialplan, I inadvertently placed 1 before my sip phone number.  Correcting this allowed me to accept incoming calls.

After fixing this, I found that the IVR voice messages via my SIP provider were choppy, as a result of a transcoding error.  Updating my external profile with the following fixed this.

<param name="inbound-codec-negotiation" value="scrooge">

Thanks to mcrane for his help on IRC.

Paul</sigh>