Re: Dial by IP fails

"Simon Horne" <s.horne@xxxxxxxxxxxxxx> · Thu, 17 Jul 2008 14:01:35 +1000

Andrew

I 
suspect you are calling an endpoint at the IP address which is 
registered with a gatekeeper. You cannot call this directly you must 
call the gatekeeper it is registered with. 

Simon

  -----Original Message-----
From: 
  openh323gk-users-bounces@xxxxxxxxxxxxxxxxxxxxx 
  [mailto:openh323gk-users-bounces@xxxxxxxxxxxxxxxxxxxxx]On Behalf Of 
  Andrew Struiksma
Sent: Thursday, 17 July 2008 9:31 
  AM
To: GNU Gatekeeper Users
Subject: Re: 
   Dial by IP fails

  It appears that my calls are failing because of 
  "routeCallToGatekeeper." Does ArjReasonRouteCallToGatekeeper have anything to 
  do with this?

  Andrew 
  Struiksma
K20 Network Support Specialist - NW Regional Video 
  ITU
Northwest Educational Service District

    From: 
    openh323gk-users-bounces@xxxxxxxxxxxxxxxxxxxxx 
    [mailto:openh323gk-users-bounces@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of 
    Andrew Struiksma
Sent: Monday, July 07, 2008 3:03 
    PM
To: GNU Gatekeeper Users
Subject:  
    Dial by IP fails

    I just 
    discovered that I cannot dial out through our proxy GK by IP address. We can 
    only dial via E.164 extension. All my video end points are NATed behind the 
    GK. Typically we dial via E.164 extension and our GK sends all the signal 
    traffic to the state gatekeeper. 
    What could be 
    causing this problem?

    The typical signaling path for a call made using an E.164 extension is 
    as follows:

    our video endpoint<-->our proxy 
    GnuGK<-->state GnuGK<-->remote video endpoint

    I've compared the log of a call to the 
    same end point via IP address and E.164 extension. Here are the differences 
    that I've discovered:

    IP--no ARQ is sent to state 
    GK
    IP--no "IE: Called-Party-Number" in the 
    section labeled "ProxyChannel.cxx(842)   Q931    
    Received: {"
    IP--no message such as 
    "ProxyChannel.cxx(1627)  Q931s   GWRewrite source for 
    10.2.5.127:1030: call record"
    IP--proxy channel 
    "ProxyChannel.cxx(899)   Q931d   Received: 
    Facility"
    Ext--proxy channel 
    "ProxyChannel.cxx(899)   Q931d   Received: 
    Alerting"
    IP--has this section:

     h323_uu_pdu = 
    {
      h323_message_body = facility 
    {
        protocolIdentifier = 
    0.0.8.2250.0.4

    alternativeAddress = ipAddress 
    {
          ip =  4 
    octets 
    {
            <IP 
    of state GK>

    }
          port = 
    1720

    }
        conferenceID =  16 
    octets {
          02 2a cf 
    3c 39 f7 19 17  2a 96 63 60 19 de bf 8d   
    .*.<9...*.c`....

    }
        reason = 
    routeCallToGatekeeper <<null>>

    IP--the call is cleared with this 
    message:

    ProxyChannel.cxx(842)   
    Q931    Received: {
  q931pdu = 
    {
    protocolDiscriminator = 8

    callReference = 21162
    from = 
    originator
    messageType = 
    ReleaseComplete
    IE: Cause - Normal call clearing = 
    {
      80 
    90                                              
    ..
    }
    IE: User-User = 
    {
      25 c0 06 00 08 91 4a 00  04 80 01 
    00 11 18 11 00   
    %.....J.........
      02 2a cf 3c 39 f7 19 
    17  2a 95 63 60 19 de bf 8d   
    .*.<9...*.c`....
      01 00 01 40 10 80 01 
    00                            
    ...@....
    }
  }
  h225pdu = 
    {
    h323_uu_pdu = {

    h323_message_body = releaseComplete 
    {
        protocolIdentifier = 
    0.0.8.2250.0.4
        reason = 
    facilityCallDeflection <<null>>

    How can I correct this problem so that I 
    can complete calls via IP address?

    Thanks!

    Here is my INI 
    file:

    -----------------------------------------------------------------
    [Gatekeeper::Main]
Fortytwo=42
Name=NWESD-GK1
ExternalIP=<GK 
    IP>

    [RoutedMode]
GKRouted=1
H245Routed=1
CallSignalPort=1720
EndpointSignalPort=1721
CallSignalHandlerNumber=5
AcceptNeighborsCalls=1
SupportNATedEndpoints=1
Q931PortRange=20000-20015
H245PortRange=30000-30015
AcceptUnregisteredCalls=1
SupportCallingNATedEndpoints=1

    [Proxy]
Enable=1
ProxyForNat=1
ProxyForSameNAT=0
T120PortRange=40000-40015
RTPPortRange=50000-50099

    [Endpoint]
Gatekeeper=<state GK IP>
    Type=Terminal
Vendor=GnuGK
H323ID=NWESD-GnuGK1
E164=00114790801488

    [RasSrv::ARQFeatures]
CallUnregisteredEndpoints=1

    [RasSrv::RRQFeatures]
SupportDynamicIP=1
OverwriteEPOnSameAddress=1
-----------------------------------------------------------------

    Andrew 

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