Hi,

 

I wonder if some kind soul might be able please to help me by pointing out what I am doing wrong with my doublenat configuration.

 

I have incoming calls from WAN --> LAN working fine, but when I try to call from LAN -->WAN, the Freeswitch CLI says:

 

 

"[ERR} switch_ivr_originate.c.2389 CAnnot create outgoing channel of type [error] cause: [USER_NOT_REGISTERED]"

 

 

The setup is essentially:

 

 

phone_1 (192.168.a.b) --> NAT (public ip 1.2.3.4) --> Internet --> NAT (public ip 5.6.7.8) --> Freeswitch (192.168.x.y) --> phone_2 (192.168.x.z)

 

 

Phone_1 is able to register with Freeswitch using a "doublenat" sip profile I set up using port 5090, created from the default external profile with the port changed. phone_1 can initiate calls to phone_2 fine with no problems with audio - everything works just fine in that direction. 

 

However when I try to call from phone_2 --> phone_1 I get the message "The person at extension 1002 is not available.  Record your message at the tone."  Meanwhile the CLI shows that Freeswitch says phone_1 is not registered.

 

In trying to solve this I have run a Wireshark trace onthe PC running the phone_1 softphone to check that the SIP registration seems to go as I understand it should.  the dialog is as follows:

 

phone_1 --> FS             request: REGISTER

FS         -->  phone_1    status: 401 Unauthorised

phone_1 --> FS             request: REGISTER

FS         --> phone_1     status: 200 OK

phone_1 --> FS             request: SUBSCRIBE

FS         --> phone_1     status: 405 Method Not Allowed

 

 

There does appear to be a difference here to what happens when phone_2 (on the same LAN as Freeswitch) registers.  With phone_2 I see:

 

phone_2 --> FS             request: REGISTER

FS         --> phone_2     status: 401 Unauthorised

phone_2 --> FS             request: REGISTER

FS         --> phone_2     status  200 OK

phone_2 --> FS             request: SUBSCRIBE

FS         --> phone_2     status: 202 Accepted

FS         --> phone_2     request: NOTIFY

phone_2 --> FS             status: 200 OK

 

 

 

More configuration details:

 

In conf/sip_profiles/doublenat.xml I have not uncommented <param name="force-register-domain" value="$$(domain)"/>

 

In conf/sip_profiles/doublenat.xml I have tried setting the context to each of public and default.  This does not seem to make a difference.

 

In conf/directory/doublenat.xml I have set the domain name to be the domain name registerd for Fs's external IP with DNS, and used by phone_1.

 

In conf/directory/doublenat.xml I have tried both of the following 9I  don't know if this is relevant)

 

1. Firstly with phone_1 registering to an extension in the default configuration, held in conf/directory/default/:

 

<groups>

    <group name="default">

       <users>

          <X-PRE-PROCESS cmd="include" data="default/*.xml"/>

       </users>

    </group>

 

2.  Then I tried moving the .xml file for phone_1's extension to conf/drectory/doublenat/ and changed conf/directory/doublenat.xml to show:

 

<groups>

    <group name="doublenat">

       <users>

          <X-PRE-PROCESS cmd="include" data="doublenat/*.xml"/>

       </users>

     </group>

 

Unfortunately this does not make a difference to the issue though.

 

If anybody had the time to tell me what I am doing wrong I would be hugely grateful !

 

Many thanks in advance

Bruce