Cable Interfaces for Universal Serial Ports
Page 28-11
Cable Interfaces for Universal Serial Ports
The
WSX
automatically senses the cable type that you plug into one of its Universal Serial
Ports. It can sense whether the cable type is
DCE
or
DTE
and whether it is one of the
following interfaces:
• RS-232
• RS-449
• RS-530
• V.35
• X.21 (European)
All cable types (except
RS-232
) are capable of access rates from 9.6 kbps to 2 Mbps. The RS-
232 cable is not compatible with speeds greater than 64 kbps. Each cable type is illustrated
and described in Appendix B, “
Custom
Cables.”
The
WSX
port is normally considered a physical
DTE
device. It is possible to turn it into a
physical
DCE
device simply by plugging in a
DCE
cable. The
WSX
board internally senses
whether a
DCE
or
DTE
cable is connected.
DTE/DCE Type and Transmit/Receive Pins
The RS-232 protocol, which is employed at the physical level for all cable types, always
defines Transmit and Receive pins in relation to the
DTE
. So, the type of cable you attach
(
DCE
or
DTE
) determines the direction of data flow on your connector’s Transmit and Receive
pins.
If the
WSX
port is a physical
DTE
, which is probably the most common configuration, then
data is received on Receive pins and transmitted on Transmit pins. If you are using a
WSX
port as a physical
DCE
, then data is transmitted on the receive pins and received on the
transmit pins.
Содержание Omni Switch/Router
Страница 1: ...Part No 060166 10 Rev C March 2005 Omni Switch Router User Manual Release 4 5 www alcatel com ...
Страница 4: ...page iv ...
Страница 110: ...WAN Modules Page 3 40 ...
Страница 156: ...UI Table Filtering Using Search and Filter Commands Page 4 46 ...
Страница 164: ...Using ZMODEM Page 5 8 ...
Страница 186: ...Displaying and Setting the Swap State Page 6 22 ...
Страница 202: ...Creating a New File System Page 7 16 ...
Страница 270: ...Displaying Secure Access Entries in the MPM Log Page 10 14 ...
Страница 430: ...OmniChannel Page 15 16 ...
Страница 496: ...Configuring Source Route to Transparent Bridging Page 17 48 ...
Страница 542: ...Dissimilar LAN Switching Capabilities Page 18 46 ...
Страница 646: ...Application Example DHCP Policies Page 20 30 ...
Страница 660: ...GMAP Page 21 14 ...
Страница 710: ...Viewing the Virtual Interface of Multicast VLANs Page 23 16 ...
Страница 722: ...Application Example 5 Page 24 12 ...
Страница 788: ...Viewing UDP Relay Statistics Page 26 24 ...
Страница 872: ...The WAN Port Software Menu Page 28 46 ...
Страница 960: ...Deleting a PPP Entity Page 30 22 ...
Страница 978: ...Displaying Link Status Page 31 18 ...
Страница 988: ...Displaying ISDN Configuration Entry Status Page 32 10 ...
Страница 1024: ...Backup Services Commands Page 34 14 ...
Страница 1062: ...Diagnostic Test Cable Schematics Page 36 24 ...
Страница 1072: ...Configuring a Switch with an MPX Page A 10 ...
Страница 1086: ...Page B 14 ...
Страница 1100: ...Page I 14 Index ...