[Freeswitch-users] INVITE ext-rtp-ip not set in FROM and SDP

Martin Soerensen martin.soerensen at kontron.com
Wed Apr 25 13:46:42 MSD 2012


Hi all. Hope that somebody can help my...

First.......... I'm new to freeswitch... so please be patient ;o)

I'm trying to use freeswitch as a SBC.. lync isn't playing nice with NAT... so I'm sending all my call through FS trying to rewrite SIP headers

I'm having problems with ext-rtp-ip and SDP in my INVITE send by freeswitch.... the external IP is not set in FROM and SDP  when I dial out via lync.. I can set FROM by setting <param name="from-domain" value="xxx.xxx.157.92"/> but SDP is still my internal IP address



My setup :

10.70.0.182                           10.70.0.59                       xxx.xxx.157.92                                yyy.yyy.65.50
  Lync Srv    <------------------> FS <---------------> Firewall Nat <----------------> ISP/SIP gateway

FreeSWITCH Version 1.1.beta1 (git-2a25c4f 2012-04-24 16-30-20 +0200)

SIP trace:
send 1078 bytes to udp/[yyy.yyy.65.50]:5060 at 07:50:03.294218:
   ------------------------------------------------------------------------
   INVITE sip:+4529802936 at yyy.yyy.65.50:5060 SIP/2.0
   Via: SIP/2.0/UDP xxx.xxx.157.92;rport;branch=z9hG4bK9FZjDgDrUyHvD
   Max-Forwards: 69
   From: "Martin Soerensen" <sip:+4578772660 at 10.70.0.59>;tag=7vjX1tBj987XS
   To: <sip:+4529802936 at yyy.yyy.65.50:5060>
   Call-ID: 1b96e79a-094e-1230-a29b-000c29236c5d
   CSeq: 27334037 INVITE
   Contact: <sip:gw+gc-gateway at xxx.xxx.157.92:5060;transport=udp;gw=gc-gateway>
   User-Agent: FreeSWITCH-mod_sofia/1.1.beta1-git-2a25c4f 2012-04-24 16-30-20 +0200
   Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, UPDATE, INFO, REGISTER, REFER, NOTIFY
   Supported: timer, precondition, path, replaces
   Allow-Events: talk, hold, refer
   Content-Type: application/sdp
   Content-Disposition: session
   Content-Length: 201
   X-FS-Support: update_display,send_info
   Remote-Party-ID: "Martin Soerensen" <sip:+4578772660 at 10.70.0.59>;party=calling;screen=yes;privacy=off

   v=0
   o=FreeSWITCH 1335307501 1335307502 IN IP4 10.70.0.59
   s=FreeSWITCH
   c=IN IP4 10.70.0.59
   t=0 0
   m=audio 32702 RTP/AVP 0 8 3 101 13
  a=rtpmap:101 telephone-event/8000
   a=fmtp:101 0-16
   a=ptime:20
   ------------------------------------------------------------------------


sofia status profile external
=================================================================================================
Name                    external
Domain Name             N/A
Auto-NAT                false
DBName                  sofia_reg_external
Pres Hosts
Dialplan                XML
Context                 public
Challenge Realm         auto_to
RTP-IP                  10.70.0.59
Ext-RTP-IP              xxx.xxx.157.92
SIP-IP                  10.70.0.59
Ext-SIP-IP              xxx.xxx.157.92
URL                     sip:mod_sofia at xxx.xxx.157.92:5060
BIND-URL                sip:mod_sofia at xxx.xxx.157.92:5060;maddr=10.70.0.59
HOLD-MUSIC              local_stream://moh
OUTBOUND-PROXY          N/A
CODECS IN               G7221 at 32000h,G7221 at 16000h,G722,PCMU,PCMA,GSM
CODECS OUT              PCMU,PCMA,GSM
TEL-EVENT               101
DTMF-MODE               rfc2833
CNG                     13
SESSION-TO              0
MAX-DIALOG              0
NOMEDIA                 false
LATE-NEG                false
PROXY-MEDIA             false
AGGRESSIVENAT           false
STUN-ENABLED            true
STUN-AUTO-DISABLE       false
CALLS-IN                0
FAILED-CALLS-IN         0
CALLS-OUT               2
FAILED-CALLS-OUT        2
REGISTRATIONS           0


sofia status gateway gc-gateway
=================================================================================================
Name            gc-gateway
Profile         external
Scheme          Digest
Realm           yyy.yyy.65.50:5060
Username        User
Password        yes
>From            <sip:User at yyy.yyy.65.50:5060>
Contact         <sip:gw+gc-gateway at 1xxx.xxx.157.92:5060;transport=udp;gw=gc-gateway>
Exten           User
To              sip:User at yyy.yyy.65.50:5060
Proxy           sip:yyy.yyy.65.50:5060
Context         public
Expires         3600
Freq            3600
Ping            1335339925
PingFreq        15
PingState       -1/1/1
State           NOREG
Status          UP
CallsIN         0
CallsOUT        0
FailedCallsIN   0
FailedCallsOUT  0
=================================================================================================

External profle:
<profile name="external">
  <!-- http://wiki.freeswitch.org/wiki/Sofia_Configuration_Files -->
  <!-- This profile is only for outbound registrations to providers -->
  <gateways>
    <X-PRE-PROCESS cmd="include" data="external/*.xml"/>
  </gateways>

  <domains>
    <domain name="all" alias="false" parse="true"/>
  </domains>

  <settings>
    <param name="debug" value="0"/>
    <param name="sip-trace" value="no"/>
    <param name="sip-capture" value="no"/>
    <param name="rfc2833-pt" value="101"/>
    <param name="sip-port" value="$${external_sip_port}"/>
    <param name="dialplan" value="XML"/>
    <param name="context" value="public"/>
    <param name="dtmf-duration" value="2000"/>
    <param name="inbound-codec-prefs" value="$${global_codec_prefs}"/>
    <param name="outbound-codec-prefs" value="$${outbound_codec_prefs}"/>
    <param name="hold-music" value="$${hold_music}"/>
    <param name="rtp-timer-name" value="soft"/>
    <param name="local-network-acl" value="localnet.auto"/>
    <param name="manage-presence" value="false"/>
    <!--<param name="aggressive-nat-detection" value="true"/>-->
    <param name="apply-nat-acl" value="rfc1918"/>
    <param name="inbound-codec-negotiation" value="generous"/>
    <param name="nonce-ttl" value="60"/>
    <param name="auth-calls" value="false"/>
    <param name="rtp-ip" value="$${local_ip_v4}"/>
    <param name="sip-ip" value="$${local_ip_v4}"/>
    <param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
    <param name="ext-sip-ip" value="$${external_sip_ip}"/>
    <param name="rtp-timeout-sec" value="300"/>
    <param name="rtp-hold-timeout-sec" value="1800"/>
  </settings>
</profile>

Gateway
<?xml version="1.0"?>
<include>
      <gateway name="gc-gateway">
        <param name="realm" value="yyy.yyy.65.50:5060"/>
        <param name="username" value="User"/>
        <param name="password" value="Password"/>
        <param name="register" value="false"/>
        <param name="caller-id-in-from" value="true"/>
        <param name="ping" value="15"/>
      </gateway>
</include>


Best regards
Martin


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