Nortel Enterprise 1000 Reference Manual page 93

Table 15
Pad switching algorithm
Port B
IPE line
Universal trunk
(TRC)
IPE tie (VNL)
PE line
PE CO/FX/WATS
(TRC)
PE tie
Note 1: Transmit and receive designations are from and to the Succession CSE 1000. Transmit is from the
Succession CSE 1000 to the external facility (digital-to-analog direction in the Universal trunk card).
Receive is to the Succession CSE 1000 from the external facility (analog-to-digital direction in the Universal
trunk card.
Note 2: When Port B is the call originating port and if the Universal trunk card is the originating port, the
UTC pads are out and the Port B (PE CO/FX/WATS) pads are in.
Succession Communication Server for Enterprise 1000 Circuit Card Reference Guide
Analog Trunk Cards - NT8D14 Universal Trunk Card
See Table 15 for the pad switching control for the various through
connections and the actual port-to-port loss introduced for connections
between the Universal trunk card and any other port designated as Port B.
Port B pads
Transmit Receive
D to A A to D
N/A N/A
In Out
In In
N/A N/A
Out Out
Out Out
Universal Trunk
Pads
Transmit Receive
D to A A to D
Out Out
In Out
Out Out
Out Out
In In
In In
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Port-to-port loss (dB)
Port B to Universal
Universal trunk
trunk card to
card Port B
0.5 0.5
1 1
0 0
1 1
1 1
0.5 0.5