Button to predial before a DSS key

[telepathinc]

In the new 2.70 firmware of T28P there is a PREFIX ( of sorts ) in the PICKUP VALUE of a BLF key. In our PBX, we dial *8xxx for a DIRECT CALL PICKUP. The Yealink firmware v70, allows a UNIVERSAL setting in the [ Phone ] tab, [ Features ] sub-tab [ Call Pickup ] section -
Direct Call Pickup = Enabled
Direct Call Pickup Code = *8 ( our setting)

Once we see a BLF key flashing and we want to DIRECT CALL PICKUP the phone, we just PRESS the flashing BLF and we see *8101 ( or whatever ext#) and we have "picked up" the call from ext 101.

THIS IS GREAT - however it still is a SINGLE KEY - SINGLE COMMAND - in this a VERY SMART command *8101 ( but this PREFIX is built into the key - WHEN THE STATE IS "RINGING")

So here is an example of INCREDIBLE GOOD YEALINK FIRMWARE - but it does not solve the "prefix" problem

SO THE QUESTION remains - and it is at the core of the FIRMWARE level - Can we have some sort of PREFIX key, that does NOT execute the command until a SECOND key is pressed such as

Voice Announce Key ( #3 for risabin *90 for me ) and THEN press BLF key 101 and the phone sends #3101 for risabin or *90101 for me