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10-64
Check whether registration account name, user name and registrar password are correct.
Check whether there are special restrictions on SIP signaling. For example, check whether or not there
is a field of specific
User-Agent
in the registration message, thus allowing only those terminal that are
allowed to register.
In addition, you can log in to the device and view the system status to fast locate the fault on SIP
registration status:
If it shows not enabled, then the registration server’s address has not been entered.
If it shows no response from the registration server, check whether you enter the correct address for
the registrar server and the network connection between IP terminals (IP phone and softphone) and
ATA , and OM20/50 fails.
If it shows the code 403 in response, check whether the registration password is correct.
If it shows the code 401 in response, check whether the registration account name and user name are
correct.
10.2.2 Incoming call on FXO gateway is always disconnected
Fault Description
Incoming call on FXO gateway call will be automatically disconnected after 1 or 2 minutes of
conversation.
Cause Analysis
PSTN line connected to the FXO port of the device do not support “Polarity reverse signal”
If PSTN don't provide polarity reverse signal but we enabled the feature “Polarity reversed signal
detection”
SIP server send BYE to FXO gateway to end the call.
Troubleshooting and Solution
Verify from telco if the PSTN line provide polarity reverse signal
Check if the feature “Polarity reversed signal detection” is enabled on the device.
If PSTN don't provide polarity reverse signal but we enabled, it will cause the call to disconnect
Check the log if it has following information:[07/06 11:19:51.652184]FXO-8075(76) disconnecte
d
If it has, set
http://x.x.x.x/xml?method=gw.config.set&id215=no
Check the log, if device receive ACK after 200OK message.
Check the log to see if server send BYE to device to end the call.
