Cisco 521SG - Unified IP Phone VoIP Administration Manual page 40

Configuring Lines
Configuring a Line Key
STEP 6
STEP 7
STEP 8
STEP 9
STEP 10
STEP 11
STEP 12
Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone Administration Guide
In the Subscription Expires field, enter the number of seconds before the SIP
subscription expires. Until the subscription expires, the phone gets NOTIFY
messages from the SIP server on the status of the shared phone extension. The
default is 60 seconds.
In the Restrict MWI (message waiting indicator) field, choose yes to set the
message waiting indicator to light only for messages on private lines (SIP). Choose
no to set the message waiting indicator to light for all messages.
Under Proxy and Registration, in the Proxy field, enter the IP address of the proxy
server (for example, the IP address of the Cisco SPA9000).
Under Subscriber Information, enter a Display Name and User ID (extension
number) for the shared extension. These are shown on the IP phone screen.
(Optional) In the Phone tab, under Miscellaneous Line Key Settings, configure line
mapping. Each LED (line/extension) can hold two calls. You can assign an extension
to two LEDs. The first call always causes the assigned LED to flash. Choose one of
the following:
• Vertical first—The next LED on the phone flashes with the second incoming
call.
• Horizontal first—The same LED to flashes with the second incoming call.
(Optional) In the Phone tab, under Miscellaneous Line Key Settings, configure SCA
Barge-In Enable. Choose yes to allow users sharing call appearances to take over
the call on a shared line. Choose no to prevent users from taking over the call on a
shared line.
For example, Bob and Chris share the extension 401. Adam, calls extension 401.
Bob answers the call. Adam and Bob are connected. If Chris has the SCA Barge-In
Enable field on her phone set to yes, she can press the line button for extension
401. Chris and Adam are connected in a call and Bob is dropped from the call.
The Cisco SPA525G or Cisco SPA525G2 support the private hold feature for
MetaSwitch and Broadsoft. Users who have a shared line can press PrivHold, and
the call can only be resumed by the user who placed the call on hold; no barge-in
can be performed on these calls.
Click Submit All Changes.
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