Chapter 2. Installation
21
November 2001
E1 Line side
DB-15 Connector
The pin assignment for DB-15 connector is as follows:
Pin: Function:
E1 Link
1 TTIP (Transmit data out)
9 TRING (Transmit data out)
3 RTIP (Receive data in)
11 RRING (Receive data in)
ALARM relay contact
7 common
8 NO (normally open)
15 NC (normally closed)
BNC coax connectors
Two BNC coax connectors marked RX and TX (Same function
as the E1 line DB15 connector).
Data port side
V.35 interface connector
Utilizes standard V.35 pin-out. The three test pins have been
chosen for loops and test. For applications using a V.35 interface,
clock mode is selected DTE2, connect the ERC input clock to
pins Z(A) and BB(B).
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