Specifications

4-14
PA-T3+ Serial Port Adapter Installation and Configuration
OL-3505-03
Chapter 4 Configuring the PA-T3+
Configuring Half-Duplex and Binary Synchronous Communications in Cisco 7200 Series Routers
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 port adapter 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 4-7 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 or exit to exit configuration mode and return to the EXEC command interpreter prompt.
Table 4-7 Half-Duplex Timer Default Delay Settings
Timer Command Syntax Default Settings
1
1. In milliseconds (ms).
CTS delay
2
2. Clear To Send (CTS).
half-duplex timer cts-delay 0
CTS drop timeout half-duplex timer
cts-drop-timeout
250
DCD drop delay
3
3. Data Carrier Detect (DCD).
half-duplex timer
dcd-drop-delay
100
DCD transmission start
delay
half-duplex timer
dcd-txstart-delay
100
RTS drop delay
4
4. Request To Send (RTS).
half-duplex timer
rts-drop-delay
3
RTS timeout half-duplex timer rts-timeout 3
Transmit delay half-duplex transmit-delay 0