You can now place calls quicker with Enbloc Dialing. When enabled, this feature eliminates the delay often experienced when dialing a phone number during the following scenarios:
On hook dialing and redialing
Speed dial and Speed dial BLF
Calls that are made from your Recent list
Calls that are made from your Directory
Previously users experienced a delay of up to 15 seconds when placing a call.
Administrators can find the Enbloc Dialing parameter in the Product Specific Configuration Layout section of CUCM. When enabled, it overrides the T.302 timer and the entire dialed string is sent to the CUCM once the dialing is complete.
Here is the "BugID" Explanation:
add new parameter "enbloc dialing" for 78xx/88xx phones(expect 8821/8831).
there are some customers who have variable length dial plan like 1234! as their outgoing pattern.
while with the SCCP phone, onhook dial will go out immediately after use clicks dial, not waiting the T302 timer, which is defautl 15 seconds.
with this new parameter, in this condition, onhook dial/speed dial/BLF speed dial/onhook dial from call history/on hook dial from personal directory/onhook dial from coporate directory will not wait the T302 timer.