Troubleshooting Guidelines
54 1600 Series IP Telephone Installation and Maintenance Guide
DTMF Tones
H.323 telephones do not send DTMF tones to non-H.323 telephones. The failure to hear DTMF
tones sent by a far-end 1600 Series IP Telephone does not require any action on the user’s
part. The TN2302AP board does not pass in-band DTMF tones.
Power Interruption
If power to a 1600 Series IP Telephone is interrupted while the telephone is saving the
application file, the HTTP/HTTPS application can stop responding. If this occurs, restart the
HTTP/HTTPS server.
The View Administrative Option
If you are using static addressing and encounter problems, use the following procedure to verify
the current values of system parameters and file versions.
Note: Unless otherwise prevented using administration, the user can view but not
change most of the parameters associated with Local Administrative Procedures.
For more information about this option, see the applicable user guide(s).
Note: If the View Network Information option is not available due to being disabled by
administration, use the ADDR option to view IP addresses. See Static
Addressing Installation in Chapter 3: Local Administrative Options. The IP
addresses might have been entered incorrectly. Verify whether you were
provided with correct IP addresses.
1. While the telephone is on-hook and idle, press the following sequence of keys on the
faceplate of the telephone:
Mute 8 4 3 9 # (Mute V I E W #)
Note: Press the Mute button momentarily. Do not press this key while pressing other
keys.
The following text displays left-justified at the top of the display:
View settings
*=next #=exit
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