Yealink SIP-T2XP Administrator's Manual page 110

Administrator's Guide for SIP-T2xP IP Phones
2. Select the desired value from the pull-down list of RFC 2543 Hold.
3. Click Confirm to accept the change.
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.
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