Specifications

5-16
PA-8T-V.35 Synchronous Serial Port Adapter Installation and Configuration
OL-3563-03
Chapter 5 Configuring the PA-8T-V.35 Interfaces
Configuring Half-Duplex and Binary Synchronous Communications
Step 2 Specify the interface to configure for controlled-carrier mode using the interface serial subcommand
(followed by the interface address of the interface) and then enter the half-duplex controlled-carrier
subcommand.
The following example is for the first interface of the port adapter in slot 1:
Router(config)# interface serial 1/0
Router(config-if)# half-duplex controlled-carrier
Step 3 Specify the length of the timer delay the interface uses when it is configured for controlled-carrier mode
by using the following command:
half-duplex timer {cts-delay value | cts-drop-timeout value | dcd-drop-delay value |
dcd-txstart-delay value | rts-drop-delay value | rts-timeout value | transmit-delay value}
where value is the length of the timer delay in milliseconds.
The following example specifies a Data Carrier Detect (DCD) drop delay of 100 milliseconds on the first
interface of a port adapter in port adapter slot 1:
Router(config)# interface serial 1/0
Router(config-if)# half-duplex timer dcd-drop-delay 100 ms
Table 5-7 lists the default delay settings and the value argument for each timer you can use with the
half-duplex timer command.
Step 4 Complete the configuration by pressing Ctrl-Z (hold down the Control key while you press Z) or
entering end to exit configuration mode and return to the EXEC command interpreter prompt.
Step 5 Write the new configuration to nonvolatile memory as follows:
Router# copy running-config startup-config
[OK]
Router#
Table 5-7 Half-Duplex Timer Default Delay Settings
Timer Command Syntax
Default Settings
(Milliseconds)
CTS
1
delay
1. Clear To Send
half-duplex timer cts-delay 0
CTS drop timeout half-duplex timer cts-drop-timeout 250
DCD
2
drop delay
2. Data Carrier Detect
half-duplex timer dcd-drop-delay 100
DCD transmission start delay half-duplex timer dcd-txstart-delay 100
RTS
3
drop delay
3. Request To Send
half-duplex timer rts-drop-delay 3
RTS timeout half-duplex timer rts-timeout 3
Transmit delay half-duplex timer transmit-delay 0