Dial by IP fails

["Andrew Struiksma" <astruiksma@xxxxxxxxxx>]

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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