Dte/dce mode jumper settings – Nortel Networks Circuit Card User Manual
Page 863
QPC513 Enhanced Serial Data Interface card
Page 863 of 906
Circuit Card
Description and Installation
DTE/DCE mode jumper settings
The interface for each ESDI port is configured independently. Ports must be
configured both for electrical interface (RS-232-C or high-speed) and mode
(DTE or DCE). With the proper options set:
•
An ESDI port configured as DTE appears as a terminal to the user
equipment.
•
An ESDI port configured as DCE appears as a modem to the user
equipment.
Interface options are set by installing option jumper plugs into the sockets
indicated in Table 271 on
.
12
13
off
on
on
on
on
on
off
*
14
15
on
on
on
on
on
on
on
*
Table 270
ESDI card address switch settings (Part 2 of 2)
Device Number
Switch S2
style A
Switch S2
style B
Port 1
Port 2
1
2
3
4
1
2
3
4
* Switch S2, position 4 is not used on style B cards.