Version 5.2/5.4 37 January 2009
Troubleshooting Guide 4. Call Setup
Possible Cause Solution
5.
The device receives a SIP 415
response from the remote IP
UA.
If the response from the remote UA for the INVITE is "415
Unsupported Media Type", then the media type contained in
the INVITE request is not supported. This may mean a
problem with coder negotiation. Therefore, check your coder
settings in the Web interface's 'Coders' page (Web path SW
Ver. 5.2: Protocol Management menu > Protocol Definition
submenu > Coders; Web path SW Ver. 5.4 and later:
Configuration tab > Protocol Configuration menu > Protocol
Definition submenu > Coders).
6.
The device receives a SIP 484
or 404 response from the
remote IP UA.
1 If the response for the INVITE is "484 Address
Incomplete" or "404 Not Found", verify that the number
sent in the INVITE is correct.
2 If you dial the full number, but the INVITE only displays
part of the number, verify the following parameters in the
Web interface's 'DTMF & Dialing' page (Web path SW
Ver. 5.2: Protocol Management menu > Protocol
Definition submenu > DTMF & Dialing; Web path SW
Ver. 5.4 and later: Configuration tab > Protocol
Configuration menu > Protocol Definition submenu >
DTMF & Dialing):
9 'Max Digits In Phone Num' (MaxDigits) is not too
low.
9 'Inter Digit Timeout for Overlap Dialing'
(TimeBetweenDigits) parameter is not too short.
9 Verify that the number the user is dialing matches
the device's digit map rules (refer to ''Why is there a
Delay in Connecting a Call'' on page 30).
3 If you dial the full number, but a different (i.e., incorrect)
number is displayed in the SIP INVITE message, check
the number manipulation settings in the 'Destination
Phone Number Manipulation Table for Tel to IP Calls'
page (Web path SW Ver. 5.2: Protocol Management
menu > Manipulation Tables submenu > Tel to IP
Destination Numbers; Web path SW Ver. 5.4 and later:
Configuration tab > Protocol Configuration menu >
Manipulation Tables submenu > Dest Number Tel to IP).
7.
The device receives other
Client-Error SIP responses (not
mentioned previously) from the
remote IP UA.
For all other Failure of Request (4xx), Server Failure (5xx),
or Global Error (6xx) responses such as "403 Forbidden",
"500 Server Internal Error" or "603 Decline", contact the
proxy or the remote user agent team.
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