11.9.1  

CSTA Interface 
 

Definition  
By selecting an application ID, the station can address the associated CSTA application if this application has already been registered with the HiPath system. A registered application can address a station independently (e.g. to confirm an action on the display).
An I/O session can be started using a feature code or a function key. You can use the function key to start, resume, and stop an I/O session; the function key LED indicates the status of the I/O session (standby, active, suspended).

I/O sessions  
An I/O session can be started using a feature code or a function key. You can use the function to start, resume, and stop an I/O session; the function key LED indicates the status of the I/O session (standby, active, suspended).
During an I/O session, a subscriber can operate the application using the following navigation keys:
 •   the keypad
 •   plus/minus keys
 •   the alphanumeric keyboard
 •   the programmable keys and softkeys (CMI)
Only one station can use a single I/O session. If a session is interrupted ("suspended" status), a second I/O session cannot be started; the interrupted session must first be ended.

Internet Telephony Service Provider (ITSP)  
ITSP trunks can be integrated in CSTA applications connected to the HiPath system via the CSTA interface. This means that for CSTAs, there are no longer any differences between TDM trunks and ITSP trunks.

Connectable CSTA applications  
Up to 8 CSTA connections are available at HiPath 3000, of which a maximum of 4 can be used for connecting server-based applications or for connection via CMD (only 1 to HiPath 33x0/35x0 and up to 4 to HiPath 3800). Other, non-server-based applications, for example CTI applications via TAPI 120 can be connected to the remaining unused CSTA connections.
Connection is via HG 1500 or the LIM board, where the board is selected based on the BHCA value. The LIM board supports 400 BHCA and is thus not suitable for server-based connections. HG 1500 supports BHCA values of 1200 and higher (dependent on the HiPath 3000 system type).

Resource monitoring  
Each resource monitored via CSTA can be monitored simultaneously up to four times. Example: A station is monitored simultaneously by four applications via CSTA.

Model-Specific Data  

 Subject  
 HiPath 3800  
 HiPath 3550  
 HiPath 3500  
 HiPath 3350  
 HiPath 3300  
Feature available in  
 x  
 x  
 x  
Hardware requirements  
 CSTA  
Software requirements  
 V6.0 or later  
 V6.0 or later  
 V6.0 or later  

Dependencies/Restrictions  
 •   The I/O service feature will be available on Siemens Enterprise Communications display telephones. (UP0, IP stimulus telephones, CMI comfort telephones).
 •   There is no configuration option with which you could block access to the I/O service procedure for any station.
 •   A maximum of 10 applications can be logged onto one system simultaneously.
 •   A single I/O session can only be used by one station at a time. If a session is interrupted ("suspended" status), a second I/O session cannot be started; the interrupted session must first be ended.
 •   A subscriber can only start an I/O session in the "idle" or "call initiated" state.