Issue 2 - 07/00 9-5
Technical & Purchasing Notes - Section 1
Interface specifications
Optional interface modules
Accommodates any two of the following BRI interface
modules:
• S interface module
• U interface module (2B1Q line coding)
• U interface module (4B3T line coding)
• U interface module (Up0 line coding)
Can also accommodate one PRI interface module (E1 access)
BRI S interface
Physical
ETSI conforms to CTR3.
Connectors
S interface 8 pin RJ45. Pinout: pin 1 optional battery status,
pin 2 optional battery status, pin 3 Tx (TE mode), pin 4 Rx
(TE mode), pin 5 Rx (TE mode), pin 6 Tx (TE mode), pin 7
optional power, pin 8 optional power.
Clock input 4 pin FCC 68 4-4. Pinout: pin 1 data input, pin 2
no connection, pin 3 no connection, pin 4 data input.
This enables the U interface lead to be used for clock input.
BRI U interface (2B1Q)
Physical
Designed to conform to ANSI T1.601 and ETR080.
Connectors
4 pin FCC 68 4-4. Pinout: pin 1 data input, pin 2 no
connection, pin 3 no connection, pin 4 data input.
Maximum line voltage
200V DC.
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