Subject	HiPath 3800	HiPath 3550    HiPath 3500	HiPath 3350    HiPath 3300
Feature available in	x	x	x
Hardware requirements	-	-	-
Software requirements	V5.0 or later	V1.0 or later	V1.0 or later

Subject	Dependency/Restriction
Call Hold	If you are on hold, you cannot use the toggle feature.
DTMF	DTMF is not deactivated when you activate the toggle feature.
Two incoming calls	If the second party is also an incoming call, the user can answer the incoming call by using the feature Call Waiting (default access code is *55) then Toggle between the first and second call as explained above.
Trunk keys	Users with line keys (Call keys, Trunk keys) can toggle between one call and another by pressing the flashing line key for the other incoming call, and Toggle between both by pressing one line key then the next. The lines are in exclusive hold.   Exception: In the case of the General Call key appearances, users should always press the Hold button, followed by the Release button, before pressing another General Call key appearance. This places the first call on Common hold. Otherwise the call remains on Consultation Hold.
MOH	MOH is always connected to the held party.