Mitel 6800 Series, Administrator'S Manual, Page: 444 / 1113

Mitel 6800 Series SIP Phone Release 4.2.0 SP2 Administrator Guide
5-181
1.
Click on
Advanced Settings->Global SIP->Advanced SIP Settings.
2.
Enter a value, in seconds, from 120 to 2147483647 in the "
BLF Subscription Period
" field.
3.
Click
Save Settings
to save your changes.
BLF/XFER AND SPEEDDIAL/XFER KEYS
The IP Phones have a transfer (Xfer) enhancement feature you can use with the BLF and
Speeddial keys -
BLF/Xfer
(for 6865i, 6867i, 6869i, and 6873i only) and
Speeddial/Xfer
.
The BLF key allows one or more extensions to be monitored, and once there is any state change
with those extensions, the key shows the status of the monitored lines. The Xfer key allows a
call to be transferred to other recipients blindly or consultatively.
The Speeddial key allows a number to be dialed quickly by pressing one key configured for
speeddialing. After answering a call, the recipient can transfer the call to an extension by:
1.
Pressing Xfer key.
2.
Entering the number of the extension or pressing Speeddial or BLF key.
3.
Pressing Xfer key again
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