[Asterisk-Users] FWD IAX Problem

[Tim Pushor]

Hi All,

I am having trouble with receiving calls from FWD via IAX. I know this 
isn't a FWD support forum, but I suspect the problem is my asterisk setup.

The problem is that I can dial out to fwd subscribers, even myself but 
they can't dial me using my FWD number.

I don't know much about IAX, but it would seem to me like a registration 
problem, but I get no errors or warnings in the asterisk console, 
running under -vvvvvvv all IAX stuff seems fine. I have other IAX 
connections (local iaxy, iaxtel, and a connection to my brothers *) that 
work fine. I see this under -vvvvvv:

    -- Registered IAX2 to '65.39.205.121', who sees us as 
68.146.107.231:4569
 
Watching my external interface, I see the IAX registration, and it seems 
to succeed, but trying the callme application on the fwd web site 
produces no traffic on the external interface from this address (or any 
other).

I am stuck. Can anyone help recommend some other things for me try? 
Could this be a problem with FWD? One thing that I have been doing is 
trying out SIP softphones against my FWD account..

Thanks for any and all help..
Tim

ethereal trace of the registration slighly trimmed:

No.     Time        Source                Destination           Protocol 
Info
      1 0.000000    68.146.107.231        65.39.205.121         IAX2     
IAX, source call# 1, timestamp 7ms REGREQ
<snip>
Inter-Asterisk eXchange v2
<snip>
        Type: IAX (6)
            IAX type: REGREQ (13)
            Information Element: Username (peer or user) for 
authentication (0x06)
                IE id: Username (peer or user) for authentication (0x06)
                Length: 6
                Username (peer or user) for authentication: 561293
            Information Element: When to refresh registration (0x13)
                IE id: When to refresh registration (0x13)
                Length: 2
                When to refresh registration: 60

No.     Time        Source                Destination           Protocol 
Info
      2 0.072646    65.39.205.121         68.146.107.231        IAX2     
IAX, source call# 1867, timestamp 11ms REGAUTH
<snip>
Inter-Asterisk eXchange v2
<snip>
        Type: IAX (6)
            IAX type: REGAUTH (14)
            Information Element: Authentication method(s) (0x0E)
                IE id: Authentication method(s) (0x0E)
                Length: 2
                Authentication method(s): 0x0003
            Information Element: Challenge data for MD5/RSA (0x0F)
                IE id: Challenge data for MD5/RSA (0x0F)
                Length: 9
                Challenge data for MD5/RSA: 111364576
            Information Element: Username (peer or user) for 
authentication (0x06)
                IE id: Username (peer or user) for authentication (0x06)
                Length: 6
                Username (peer or user) for authentication: 561293

No.     Time        Source                Destination           Protocol 
Info
      3 0.073611    68.146.107.231        65.39.205.121         IAX2     
IAX, source call# 1, timestamp 81ms REGREQ
<snip>
Inter-Asterisk eXchange v2
<snip>
        Type: IAX (6)
            IAX type: REGREQ (13)
            Information Element: Username (peer or user) for 
authentication (0x06)
                IE id: Username (peer or user) for authentication (0x06)
                Length: 6
                Username (peer or user) for authentication: 561293
            Information Element: When to refresh registration (0x13)
                IE id: When to refresh registration (0x13)
                Length: 2
                When to refresh registration: 60
            Information Element: MD5 challenge result (0x10)
                IE id: MD5 challenge result (0x10)
                Length: 32
                MD5 challenge result: 2c8c3c022ad9bea3eced73f61ddd1112

No.     Time        Source                Destination           Protocol 
Info
      4 0.142756    65.39.205.121         68.146.107.231        IAX2     
IAX, source call# 1867, timestamp 81ms REGACK

Frame 4 (90 bytes on wire, 90 bytes captured)
<snip>
Inter-Asterisk eXchange v2
<snip>
        Type: IAX (6)
            IAX type: REGACK (15)
            Information Element: Username (peer or user) for 
authentication (0x06)
                IE id: Username (peer or user) for authentication (0x06)
                Length: 6
                Username (peer or user) for authentication: 561293
            Information Element: Date/Time (0x1F)
                IE id: Date/Time (0x1F)
                Length: 4
                data: 0x0a6e7b3c
            Information Element: When to refresh registration (0x13)
                IE id: When to refresh registration (0x13)
                Length: 2
                When to refresh registration: 60
            Information Element: Apparent address of peer (0x12)
                IE id: Apparent address of peer (0x12)
                Length: 16
                Apparent Address
                    Address: 68.146.107.231 (68.146.107.231)
                    Port: 4569

No.     Time        Source                Destination           Protocol 
Info
      5 0.144927    68.146.107.231        65.39.205.121         IAX2     
IAX, source call# 1, timestamp 81ms ACK

Frame 5 (54 bytes on wire, 54 bytes captured)
<snip>
Inter-Asterisk eXchange v2
<snip>
        Type: IAX (6)
            IAX type: ACK (4)