Chapter 5 Extension Management
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Intercom: When you lift the headset, you can dial to an extension directly. To
dial the CO line number, you have to press the CO line access code first.
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CO Line: When you lift the headset, it will retrieve the CO line access code
automatically. To dial the extension number, you have to press the Intercom
button first.
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Operator: When you lift the headset, it will directly connect to the operator.
For the settings of operator, please refer to Chapter 6 Group Management.
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Hotline: When you lift the headset, it will automatically connect to a specific
extension or extension group. Please enter the hotline number in the field of
Hotline.
Class of Service
Assign one Class of Service to restrict extensions to make unnecessary calls.
With Auto Discovery, the settings in Class of Service will be applied to the
extension automatically.
Calling permission on Class of Service will be performed with top priority.
Please refer to Chapter 6 Group Management/Class of Service for more details
about call permission.
Button Mapping Group
Select a “Button Mapping Group” which supports programmable keys on IP
phone as feature access buttons to enable speed dialing, call park and to access
CO lines. You can set Button Mapping Group as a template to be adopted by
the IP phones.
For more information about Button Mapping, please refer to Chapter 6 Group
Management/IP Phone/Button Mapping and Chapter 5 Extension
Management/Button Mapping Groups for more details about Button Mapping
Extension.
CODEC
From the CODEC list, select PCM format G.711 that compresses a call to 64
Kbps, providing higher call quality but using higher bandwidths. Other
alternatives include G.723.1 compressing to 5.3/6.3 Kbps consuming smaller
bandwidth, but with poorer voice quality and G.729 compressing to 8 Kbps.
Jitter Buffer Depth
