3.3.45  
TST1 (for U.S. only) 
 
NOTE  
Danger of damage to property due to surge voltage. The required lightning protection measures must be taken for this board, see Section 2.1.2 "Lightning Protection".  

Introduction  
The digital T1/PRI trunk module (TST1) connects the communications server to primary rate interface (PRI) ISDN via a T1 interface.
There are two versions of this board:
 •   S30810-Q2919-X - for use in the HiPath 3550 (wall housing)
 •   S30810-K2919-Z - for use in the HiPath 3500 (19-inch housing)
The board can also be used for the following layer-1 operating modes:
 •   Super Frame SF
 •   Extended Super Frame ESF
Board usage is subject to the following restrictions:
 •   Only one TST1 board allowed (primary multiplex access)
 •   For slot 7 or 9 only
Rather than connecting to a main distribution frame (MDF), the TST1 connects to a channel service unit (CSU). The CSU provides the required primary protection.

Interfaces  
 Figure 3-119   TST1 (for U.S. only) (S30810-Q2919-X/S30810-K2919-Z)
 

Contact assignment  

 Table 3-167   TST1 (for U.S. only) - Contact Assignment
 Contact  
 X2  
   
 Contact  
 X2  
 1  
 b-wire (ring), receive  
   
 5  
 a-wire (tip), transmit  
 2  
 a-wire (tip), receive  
 6  
 not connected  
 3  
 not connected  
 7  
 not connected  
 4  
 b-wire (ring), transmit  
 8  
 not connected  

HiPath 3000/5000 V9, Service Documentation, Issue 10   up Top
Disclaimer & Copyright   ID: P31003H3590S100017620   2014-02-27