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CS AASTRA 6753i IP PHONE USER GUIDE AASTRA – 2786-003
CLEARSPAN® IS A REGISTERED TRADEMARK OF AASTRA TECHNOLOGIES LTD. PAGE 61 OF 86
6.18 Shared Call Appearance Call Retrieve
Shared Call Appearance (SCA) is when incoming calls are presented to multiple phones
simultaneously. For example, it is the ability to assign the boss' extension to a button on the
secretary's phone. Calls can be transferred between two phones with the same extension button
by simply putting the call on hold at one phone and picking it up on the other. Status LEDs flash in
unison, allowing all people sharing the extension to see the status at a glance.
The phones include an enhanced SCA for the servers that support call bridging and allows two or
more SCA users to be connected in a call with a third party. Refer to the following example.
Figure 4 SCA Call Bridging
In the example above, when a call comes into Phone 1, Phone 2 and Phone 3 can pick up the
same call by pressing the SCA line key. Phone 2 and 3 display the call they are bridging into on the
phone display. Existing SCA parties in a bridge or one-to-one call hear an audible beep when
another party has joined the call.
Your Administrator must enable/disable the beep on the server-side.
If a phone is configured for SCA bridging and it attempts to join a call, but the account on the server
does not have this functionality enabled, an error message displays to the LCD on the phone.
The SCA call bridging feature is disabled by default on all phones. Your Administrator can
enable/disable this feature if required. Contact your System Administrator for more information.
6.18.1 Keys States and LED Behavior
There are two call states on the phones that support SCA bridging:
Bridge-active - A bridged call is in progress
Bridge-held - The 3rd-party (i.e., non-SCA party) in the bridge is on hold.
The following tables provide the key states and LED behavior in an SCA bridge call for users
involved in an SCA call and users not involved in the SCA call.
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