Version 5.2/5.4 25 January 2009
Troubleshooting Guide 4. Call Setup
4.1.4 Advanced IP-to-Tel Troubleshooting for FXO Interfaces (1-Stage
Dialing)
Table 4-4: IP-to-Tel Call Setup Troubleshooting - FXO Interfaces (One-Stage Dialing)
Possible Cause Solution
1.
Channel Select Mode is
incorrectly configured.
If a SIP INVITE message is received but the Syslog shows a
warning that an endpoint cannot be located, for example:
WARNING: (lgr_TrnkGrp)(61) !! [ERROR]
#0:TrunkGroup::AllocateEndPoint- Can't
find EndPoint for phone number 2000
WARNING: (lgr_psbrdif)(62) !! [ERROR]
MotherBoard::GetEndPoint- Can't find
EndPoint for Dest:2000 Source:100
SourceIp:13d2e50
WARNING: (lgr_call)(63) !! [ERROR]
Call::GetEndPoint- Can't find endpoint for
phone number 2000
If the Channel Select Mode is set to "By Dest Phone
Number", change the Channel Select Mode to either "Cyclic
Ascending", "Cyclic Descending", "Ascending", or
"Descending" on the Web interface's 'Trunk/Hunt Group
Settings' page (Web path SW Ver. 5.2: Protocol
Management menu > Trunk Group Settings; Web path SW
Ver. 5.4 and later: Configuration tab > Protocol Configuration
menu > Trunk Group submenu > Trunk Group Settings).
2.
The FXO interface doesn't seize
the FXO line with the PBX.
In the Syslog, ensure that the following message appears:
FXO Seize Line
If this message does not appear, ensure that the physical
FXO trunk line is securely connected between the device
and PBX. If this message still does not appear, send the
Syslog trace and the device's ini file to AudioCodes
Technical Support team.
3.
The device does not detect a
dial tone from the PBX.
In the Syslog, check if the following message appears:
WAIT_FOR_DIAL_TIMER_EXPIRED_EV
By default, the FXO device dials the phone number (to the
PSTN/PBX line) only after it detects a dial tone. If the above
message doesn’t appear in the Syslog, you can perform one
of the following:
Define the dial tone that is generated by the PBX in the
device's Call Progress Tone (CPT) file.
Disable this option for the device, using the ini file
parameter IsWaitForDialTone set to 0.
4.
The FXO interface does not dial
the correct destination phone
number.
In the Syslog, check if the following message appears:
Sending DTMFs
and that the message shows the correct destination number.
This message indicates that the FXO dialed the requested
number.
5.
The phone does not ring. Contact the PBX service provider.
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