Operation Manual

Customizing Your Phone
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2. Select Enabled from the pull-down list of Dual-Headset.
3. Click Confirm to accept the change.
Note
Three types of DSS keys: Memory Keys, Line Keys and Programmable Keys. The details
will be introduced in the following. The use of line keys and memory keys are almost the
same. The SIP-T28P IP phone supports 10 memory keys and 6 line keys.
You can assign predefined functionalities to the memory keys located on the right of the
phone. Memory keys allow you to have quick access to features such as call return and
voice mail. The memory key LEDs will indicate status when the keys are assigned with
particular features, such as BLF. The default key type of each memory key is N/A, which
indicates that this memory key provides no functionality until configuration.
To configure the memory key via phone user interface:
1. Press Menu->Features->DSS Keys->Memory Keys.
2. Select the desired memory key, and then press the Enter soft key.
3. Select the desired key type from the Type field.
4. (Optional.) Select the desired key event type from the Key Type field.
5. (Optional.) Select the desired account from the Account ID field.
Dual headset is configurable via web user interface only.