User Guide for the SIP-T41P IP Phone
152
check whether the dial tone is present for one of the audio modes.
If the dial tone exists on another audio mode, connect a different handset or
headset to isolate the problem.
Why doesn’t the phone ring?
Check the ringer volume on the phone. To adjust the ringer volume setting, press the
Volume key when the phone is on-hook and idle. For more information, refer to
Volume
on page
30
.
Why does the phone play a tone when there is a call on hold? How to disable it?
When there is a call on hold, the phone will play a hold tone every 30 seconds. Call hold
tone is enabled by default. Call hold tone and the interval of playing a hold tone are
configurable via web user interface only.
To configure call hold tone and call hold tone delay via web user interface:
1.
Click on Features->General Information.
2.
Select the desired value from the pull-down list of Play Hold Tone.
3.
Enter the desired time in the Play Hold Tone Delay field.
4.
Click Confirm to accept the change.
How to make a call using SRTP?
You can enable SRTP to encrypt the audio stream(s) of phone calls. The parties
participating in the call should enable SRTP on a per-line basis.
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