CX950 Hardware Reference Manual
11-4
3021M100-002
NOTE: To Our Users in Australia
When connecting an ISDN-S/T interface, you should only use CCL listed
interconnection cables as they adhere to technical standard TS 008.
11.1.3 Power
Power
Consumption
4.0 Watts (13.6 BTU/hr).
Power Source
The motherboard 120-pin connector supplies +5 and +15 VDC to the card and
provides the Ground return.
On-board
Power Supply
and Detection
In the NT configuration, the card can supply (between the Tx and Rx lines) up to
25mA at 40 VDC (PS1 or phantom power) to an external device.
In the TE configuration, the card is able to detect the 40VDC (PS1 or phantom
power) from the ISDN S/T line.
WARNING:
This equipment will not operate when main power fails.
Table 11-2 Signal Pin-Outs for ISDN-S/T Port
Pin # TE Signal NT Signal
1 not used not used
2 not used not used
3 +Transmit +Receive
4 +Receive +Transmit
5 - Receive - Transmit
6 - Transmit - Receive
7 not used not used
8 not used not used
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