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2. TB8100 BASE STATION Asynchronous Port Switch (APS)

3. Asynchronous Port Switch
Provides remote multi-channel Alarm Centre and Service Kit access over ONE Public Switched Telephone Line (PSTN).
Extremely cost effective site management system when using multiple TB8100s.
Multi-sourced third party APS units are integrated into Service kit and Alarm centre platforms.
APS units either supplied by Tait or directly sourced.
AC or 12V DC
Options available:
8 port : Supports up to 8 Base Station channels + 1 modem + 1 ethernet.
16 port : Supports up to 15 Base Station channels + 1 modem + 1 ethernet.
32 port : Supports up to 31 Base Station channels + 1 modem + 1 ethernet

4. Asynchronous Port Switch
APS units support only one call at a time.
If the PSTN line is busy (at the site or the alarm centre) retry timers and counters ensure the alarm notification is still processed successful.
Can also plug on site service kit into a spare APS port and access any base station locally.
APS have two operational modes:
Command mode (for call set up).
Transparent mode (actual serial data transfer).
‘Escape’ characters are used to switch between the two modes.

5. Asynchronous Port Switch

6. APS numeric response to commands.
Service Kit dial in configuration
Connect Command syntax
x = APS port base station is connected to.
^M = instructs the APS to enter command mode.
/C = requests a connection.
^M = terminates the sequence.
Disconnect Command syntax
LLL = Escape sequence.
/X^M = Command mode exit instruction.
APS numeric response to commands.

7. Base Station dial out configuration
Exactly same syntax as previous slide
Retry timer and counter configuration
Also refer : TN-906 Asynchronous Port Switch

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