Troubleshooting Guide 34 Document #: LTRT-57601
MediaPack, Mediant 1000, Mediant 2000
4.2.4 Advanced Tel-to-IP Troubleshooting for FXO Interfaces
Table 4-10: Tel-to-IP Call Setup Troubleshooting - FXO Interfaces
Possible Cause Solution
1.
The PSTN ringing signal from
the PBX is not received by the
device due to incorrect physical
connection of PBX trunk line to
the device's FXO port.
Verify that the physical PBX trunk line connection is correct,
by performing the following:
1 Enable Syslog.
2 Make a call from the PBX to an IP destination (via the
device).
3 Open a Syslog session and verify that the following
messages appear:
18:19:58.398: 10.15.6.1: NOTICE:
(lgr_psbrdex)(373) recv <--
ANALOG_IF_RING_START Ch:4 type(0)
18:19:58.398: 10.15.6.1: NOTICE:
(lgr_flow)(374) #4:RING_START_EV
18:19:58.414: 10.15.6.1: NOTICE:
(lgr_flow)(375) | #4:RING_START_EV
18:19:59.351: 10.15.6.1: NOTICE:
(lgr_psbrdex)(376) recv <--
EV_ANALOG_IF_RING_END Ch:4 type(0)
18:19:59.351: 10.15.6.1: NOTICE:
(lgr_flow)(377) #4:RING_END_EV
18:19:59.351: 10.15.6.1: NOTICE:
(lgr_flow)(378) | #4:RING_END_EV
4 If the Syslog messages above do not appear, check that
the correct PBX trunk line is connected to the device's
FXO port, or contact the PBX service provider.
2.
The Automatic Dialing mode is
not correctly configured.
If you are implementing the Automatic Dialing feature,
ensure that it is configured correctly. This is configured in
the Web interface's 'Automatic Dialing' page (Web path SW
Ver. 5.2: Protocol Management menu > Endpoint Settings
submenu > Automatic Dialing; Web path SW Ver. 5.4 and
later: Configuration tab > Protocol Configuration menu >
Endpoint Settings submenu > Automatic Dialing).
Note: There are two types of Automatic Dialing:
When making a call, the number in the 'Destination
Phone Number' field is automatically dialed if the phone
is off-hooked (for FXS interfaces) or a ring signal is
applied to a port (FXO interfaces).
When a phone is off-hooked and no digit is dialed for a
user-defined period (HotLineToneDuration), the number
in the 'Destination Phone Number' field is automatically
dialed (applies to FXS and FXO interfaces).
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