3.3.44  

TMQ4 (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  
An TMQ4 (ISDN BRI) trunk module connects up to four digital trunks to the HiPath 3550 and HiPath 3350.
The TMQ4 board provides basic rate interface (BRI) ISDN via a U2B1Q interface. The interface supports the following central office protocols:
 •   AT&T 5Ess NI-1
 •   AT&T 5ESS Custom
 •   Nortel DMS100 NI-1
 •   EWSD NI-1

Interfaces  
 Figure 3-118   TMQ4 (for U.S. only) (S30810-Q2917-X)
 

Contact assignment  

 Table 3-166   TMQ4 (for U.S. only) - Contact Assignment
 Contact  
 Connector X2  
 Port  
   
 Contact  
 Connector X2  
 Port  
 1  
 b-wire (ring), trunk 1  
 1  
   
 5  
 b-wire (ring), trunk 3  
 3  
 2  
 a-wire (tip), trunk 1  
 6  
 a-wire (tip), trunk 3  
 3  
 b-wire (ring), trunk 2  
 2  
 7  
 b-wire (ring), trunk 4  
 4  
 4  
 a-wire (tip), trunk 2  
 8  
 a-wire (tip), trunk 4  
Note: Pinouts shown are at the board itself. The main distribution frame cable (MDF cable) supplied reverses the signal order before the MDF.