Patton electronic SmartNode 4110 Series ユーザーズマニュアル

Serial port configuration task list

SmartWare Software Configuration Guide 

Before using the serial interface the hardware port protocol has to be specified. There are two command 
options available to select the suitable hardware port protocol:

•

v35 for V.35 protocol to be used

•

x21 for X.21 protocol to be used

Mode: Administrator execution

Example: Configuring the hardware port protocol 

The following example enables X.21 as hardware port protocol for the serial interface on slot 0 and port 0. 
Check that Hardware Port is set to X.21 in the command output of 

.

node(cfg)#port serial 0 0
node(prt-ser)[0/0]#hardware-port x21
node(prt-ser)[0/0]#show port serial

Serial Interface Configuration
------------------------------

Port            : serial 0 0 0
State           : CLOSED
Hardware Port   : X.21
Transmit Edge   : normal
Port Type       : DTE
CRC Type        : CRC-16
Max Frame Length: 2048
Recv Threshold  : 1
Encapsulation   : framerelay

Depending on the system configurations—i.e. when using long cables, with certain modem types or data 
rates—synchronization problems may occur on the serial port. In these cases, it may be necessary to configure 
the clock edge on which data is transmitted.

This procedure describes how to set the active clock edge of the serial interface

Mode: Port serial

Selects the serial interface on slot and port

node(prt-ser)[slot/port]#hardware-port {v35 | x21} Sets the hardware port protocol

Displays the serial interface configuration

Configures the serial interface to transmit on the 
positive edge of the clock (normal, default).

Configures the serial interface to transmit on the 
negative edge of the clock (inverted).