Aastra Telecom SISIP 57I CT - Manual (Page 149)

Operational Features
41-001160-00, Rev 01 Release 2.0 5-21
Operational IP Phone Features
Operational IP Phone Features Softkeys/Programmable Keys/Feature Keys
You can configure the softkeys and programmable keys (53i has programmable
keys only) to perform specific functions on the IP phones.
Softkeys (55i, 57i, 57i CT)
The 55i IP phone has 6 softkeys you can configure to perform specific functions,
The 57i and 57i CT IP phones have 12 softkeys you can configure. With up to 3
Expansion Modules attached to the phone, you can get an additional 72 softkeys
to configure (not all functions apply to Expansion Module softkeys). The
following table provides the number of softkeys you can configure, and the
number of lines available for each type of phone.
*The 536EM expansion module consists of 36 softkeys. You can have up to 3 expansion modules on an IP
phone totaling 108 softkeys. Valid for 55i, 57i, and 57i CT phones.
**The 560EM expansion module consists of 60 softkeys. You can have up to 3 expansion modules on an IP
phone totaling 180 softkeys. Valid for 57i and 57i CT phones only.
Note: When entering definitions for softkeys, the “#” sign must be
enclosed in quotes.
IP Phone
Model Softkeys
Additional Softkeys
with Expansion
Modules
Programmable
Keys
Lines
Available
Handset
Keys
Available
55i 6 36 to 108*
(Model 536EM)
6 9 -
57i 12 36 to 108*
(Model 536EM)
60 to 180**
(Model 560EM)
- 9 -
57i CT 12 36 to 108* on Base
Station
(Model 536EM)
60 to 180** on Base
Station
(Model 560EM)
- 9 15