3.3.46  
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 3-125   TST1 (for U.S. only) (S30810-Q2919-X/S30810-K2919-Z)
 

Contact assignment  

 Table 3-170   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 V8, Service Documentation, Issue 10   up Top
Disclaimer & Copyright   ID: P31003H3580S100017620   2011-01-24