DEAD AIR

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I am facing DEAD AIR problem. Whenever I call, neither ringing tone is heard nor the conversation between parties occur. Although call
successfully gets connected but no voice transmission.



I have the following network diagram:

                                                                         192.168.0.91
    =================                  ++++++++++++           ---------------------------|
    |                                |                   +                   +           |                           |
    |  INTERNET               |----------------  +   GK            +-----------|                           |
    |                                |                  +                     +          | Quintum AXT 800 |
    |                                |                  +                     +          |                           |
    =================    202.x.x.x ++++++++++++          |---------------------------|
                                                                                       192.168.0.90

GK Machine is a linux box with two NICs.

Following is the GK config:

[Gatekeeper::Main]
Fourtytwo=42
Name=GK
TimeToLive=300
Home=202.x.x.x
UnicastRasPort=1719
MulticastRasPort=1718
SignalReadTimeout=3000

[LogFile]
Rotate=Hourly
RotateTime=59

[RoutedMode]
GKRouted=1
H245Routed=1
CallSignalPort=8080
CallSignalHandlerNumber=1
RtpHandlerNumber=1
AcceptNeighborsCalls=1
RemoveH245AddressOnTunneling=1
DropCallsByReleaseComplete=1
AcceptUnregisteredCalls=1
SupportNATedEndpoints=1
SendReleaseCompleteOnDRQ=1
TcpKeepAlive=1

[Proxy]
Enable=1
InternalNetwork= 192.168.0.0/24
ProxyForNAT=1


[RasSrv::PermanentEndpoints]
192.168.0.90=GW91311;*


[EP::GW91311]
Capacity=8
GatewayPriority=5
GatewayPrefixes=*

[Gatekeeper::Acct]
FileAcct=optional;start,stop

[FileAcct]
DetailFile=/var/log/gk/gkcdr
CDRString=%s|%g|%u|%{Calling-Station-Id}|%{Called-Station-Id}|%{caller-ip}|%{callee-ip}|%{connect-time}|%{disconnect-time}|%d|%c|
Rotate=daily



[GkStatus::Auth]
rule=explicit
127.0.0.1=allow
192.168.0.91=allow
202.38.55.146=allow
default=forbid



Below is the H323 configuration of Quintum tenor AXT 800:

Quintum-H323SignalingGroup-1# print

H323SignalingGroup-1 :
  PrimaryGateKeeperIPAddr      : 0.0.0.0
  SecondaryGateKeeperIPAddr    : 0.0.0.0
  GRQPrimaryGK                 : 0                   No, do not allow
  GRQSecondaryGK               : 0                   No, do not allow
  RegisterDN                   : 1                   GW Prefixes
  RelayProgress                : 1                   Yes,default
  IgnoreGrantedBandwidth       : 0                   No, not ignore
  DefaultH245Tunneling         : 0                   No,disabled;default
  H323ID                       : (Not Set)           Alphanumeric string
  TimeOutRIP                   : 5                   seconds
  LightWeightRRQ               : 0                   Disable LwRRQ; defau
  GateWayType                  : 0                   H323 GW; default
  UsePartyNumber               : 0                   Off
  EarlyH245                    : 0                   sent after connect
  StartH245Collision           : 0                   H245 not by spec
  AllowFSOnly                  : 1                   no disconnect withou
  IgnoreFSifH245Addr           : 0                   default;does Faststa
  MediaAfterConnect            : 0                   default; opens H245
  CRDoInboundARQ               : 1                   enables inbound ARQ
  AutoExtIP                    : 0                   disable
  DirectGWRouting              : 0                   disabled
  REServed                     : 0                   user specific
  AllowURQ                     : 1                   enabled
  RRQInterval                  : 0                   0-65535,0 default
  H245TimerVal                 : 4                   Seconds
  RRQV3Plus                    : 0                   Don't use V3 plus
  MuxCAPability                : 0                   Disabled

Quintum-H323SignalingGroup-1#

Below is the db.txt file of Quintum:

# /*<-- System Info. Do not overwrite!
# Product: Tenor AX
# IP: 192.168.0.90
# Subnet: 255.255.255.0
# Gateway: 192.168.0.91
# Software: P103-08-00
# DB: DB_CMS_M09_A012_V7.0.00_080205
# Updated: THU JAN 19 23:00:46 2006
# -->*/
config
table off
VOIPNetwork 1
set id "1"
SIte 1
set id "1"
TimeServer 1
set UTCOffset 0:00
DialPlan 1
set MINDNlength 3
set MAXDNlength 20
set LongDistancePrefix ""
set CarrierPrefixPattern ""
set INTernationaLPrefix[1] ""
UserProgramDialPlan 1
IPDialPlan default
PRIVateNumberingPlan 1
MasterChassis 1
set Type 3   
set DBVersion "DB_CMS_M09_A012_V7.0.00_080205"   
IVRFileServer 1
RemoteTenorManagerInfo 1
SYSLogServer 1
set id "1"
CDRServer 1
set id "1"
CDRServer 2
set id "2"
set CDRServerPort 9003
new ChannelGroup line
ChannelGroup line
NMSServer 1
DNSServer 1
RadiusInfo UserServer
set name "User Authentication Server"
RadiusInfo EndpointServer
set name "Endpoint Authorization Server"
RadiusInfo RoutingServer
set name "External Routing Server"
DOMain 1
set id "1"
set Company "Quintum"
ZOne 1
set id "1"
GateWay 1
set Description "Tenor AX Gateway"
NumberDirectories 1
BypassNumberDirectory 1
set id "1"
HuntLDNDirectory pub1
set id "pub1"
HuntLDNDirectory prv1
set id "prv1"
set LDNType 1
CallerIDXlationDirectory 1
set id "1"
HopoffNumberDirectory 1
set id "1"
add 888891 r 0
add 888891* r 0
add 91 r 0
VoiceCodec 1
set CodecPayloadSize 30
VoiceCodec 2
set CodecVoiceCoding 68
set CodecPayloadSize 30
CodecProfile default
CASSignalingGroup phone
set id "phone"
CASSignalingGroup line
set id "line"
set ORientation 0
set AnswerDelay 45
SIPSignalingGroup 1
H323SignalingGroup 1
set AllowFSOnly 1
TrunkCircuitRoutingGroup line
set id "line"
set EndOfDialDigit #
LineCircuitRoutingGroup phone
set id "phone"
set EndOfDialDigit #
FaxProfile 1
IPRoutingGroup default
set EndOfDialDigit #   
set MediaQOSValue b0
set SignalingQOSValue b0   
ToneProfile 1
set id "1"
DNChannelMap 1
GateKeeperParam 1
EndPointAddressDirectory 1
QOSPolicy 1
RouteDirectory 1
StaticRoute 1
set id "1"
table on

ChannelGroup line
set SignalingGroupAttached CASSignalingGroup-line
set RoutingGroupAttached TrunkCircuitRoutingGroup-line
CodecProfile default
set VoiceCodecAttached[1] VoiceCodec-1
set VoiceCodecAttached[2] VoiceCodec-2
TrunkCircuitRoutingGroup line
set HopoffNumberDirAttached[1] HopoffNumberDirectory-1
LineCircuitRoutingGroup phone
set BypassNumberDirAttached[1] BypassNumberDirectory-1
set PUBHuntLdnDirAttached[1] HuntLDNDirectory-pub1
set PRIVHuntLdnDirAttached[1] HuntLDNDirectory-prv1
IPRoutingGroup default
set CodecProfileAttached CodecProfile-default
set IPDialPlanAttached IPDialPlan-default
StaticRoute 1
set IPRoutingGroupAttached IPRoutingGroup-default
# DO NOT TOUCH: Integrity Checked!


Help will be highly appreciated.


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