Nortel Networks Circuit Card - 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
page 865 and Table 272 on page 865 .
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.