Mitel SX-200 Practices page 214

Features Description
SUPERSET
DN and SUPERsET Telephones:
The called extension, hunt group, or trunk group is busy. To set a callback:
.
.
l
.
Press the CALLBACK feature key - dial tone is returned. Your set is
available for normal use.
When the busy extension, hunt group, or Trunk Group becomes idle,
your set rings.
Go off-hook - ringback or audio for ARS dialing is heard.
The required extension rings or the trunk is seized.
;
Note: You can also follow the steps given for industry-standard telephones to set a
Callback - Busy on SUPERSET 3 DN and SUPERSET 4 10 telephones.
SUPERSET 420
Telephones:
The called extension, hunt group or Trunk Group is busy. To set a callback:
Press the
Callback
softkey - if you' re off-hook, dial tone is returned; if
you' re using handsfree operation, the set goes idle. CALLBACK SET...
appears briefly in the display. Your set is available for normal use.
When the busy extension, hunt group, or Trunk Group becomes idle,
your set rings.Your set' s LCD indicates that a callback is calling.
Go off-hook - ringback or audio for ARS dialing is heard.
The required extension rings or the trunk is seized.
SUPERSET 4
DN and SUPERSET Telephones:
The called extension or Trunk Group is busy. To set a callback:
.
_
.
.
.
Press the
Call Me Back
softkey - if you' re off-hook, dial tone is re-
turned; if you' re using handsfree operation, the set goes idle.
CALLBACK SET... appears briefly in the display. Your set is available
for normal use.
When the busy extension, hunt group, or Trunk Group becomes idle,
your set rings.Your set' s LCD indicates that a callback is calling.
Go off-hook - ringback or audio for ARS dialing is heard.
The required extension rings or the trunk is seized.