Alcatel Carrier Internetworking Solutions Switch/Router Manuale Utente

Page 29-39

This column indicates the physical cable type connected to this port. This cable type is auto-
matically sensed by the 

WSX

 hardware. This column indicates the cable type and whether it is 

DCE

 or 

DTE

. The following values may display in this column

•

 (V.35 DTE cable)

•

 (V.35 DCE cable)

•

 (RS-232 DTE cable)

•

 (RS-232 DCE cable)

•

 (X.21 DTE cable)

•

 (X.21 DCE cable)

•

 (RS-530 or RS-449 EIA DTE cable)

•

 (RS-530 or RS-449 EIA DCE cable)

•

 (T1 port)

•

 (E1 port)

The 

WSX

 sees 

RS-530

 and 

RS-449

 cables the same because they are electrically identical. 

However, this does not affect the operation of either cable type. Both 

RS-530

 and 

RS-449

 

cables are supported. If no cable is connected to a port, then this column will display

If an error has been detected on the port (e.g., cable type could not be detected), then the 
following value displays:

This column indicates the speed, or access rate, between the 

WSX

 serial port and 

DSU

 or other 

“physical” 

DTE

 device. The speed is expressed in bits per second (bps). This speed is the total 

available bandwidth on the line connected to this port. Virtual circuits on this port share this 
bandwidth.

Usually, the 

WSX

 port will be a physical 

DTE

 device and the speed will be determined by the 

DSU

. In this case, this value will read 

, which means the 

WSX

 port gets its clocking 

from an externally attached 

DCE

 device (i.e., 

DTE

 cable plugged into 

WSX

 port) or no cable is 

attached. If the 

WSX

 port is a physical 

DCE

 device (i.e., 

DCE

 cable plugged into 

WSX

 port), 

then this value will be the actual clock rate used by the port. The speed on a T1 port will 
always be 1544000; the speed for an E1 port will always be 2048000.