TB 8100 BASE STATION Asynchronous Port Switch APS

TB 8100 BASE STATION Asynchronous Port Switch (APS) 2

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 TB 8100 s. • 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 12 V 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 3

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.

Asynchronous Port Switch

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.

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