Command:

dialer in-band

Mode:

Router(config-if)#


Syntax:

dialer in-band [no-parity | odd-parity]

no dialer in-band

 

Syntax Description:

no-parity

This indicates that no parity is to be applied to the dialer string that is sent out to the modem on synchronous interfaces.

odd-parity

This indicates that the dialed number has odd parity (7-bit ASCII characters with the eighth bit as the parity bit) on synchronous interfaces.

 

Command Description:

 

To specify that dial-on-demand routing (DDR) is to be supported, use the dialer in-band interface configuration command. To disable DDR for the interface, use the no form of this command.

The dialer in-band command specifies that chat scripts will be used on asynchronous interfaces and V.25 bis will be used on synchronous interfaces. The parity keywords do not apply to asynchronous interfaces.

The parity setting applies to the dialer string that is sent out to the modem. If a parity is not specified, or no parity is specified, no parity is applied to the output number. If odd parity is configured, the dialed number will have odd parity (7-bit ASCII characters with the eighth bit as the parity bit.)

If an interface only accepts calls and does not place calls, the dialer in-band interface configuration command is the only command needed to configure it. If an interface is configured in this manner, with no dialer rotary groups, the idle timer never disconnects the line. It is up to the remote end (the end that placed the call) to disconnect the line based on idle time.


Example:

 

The following example specifies DDR for asynchronous interface 1:
Router(config)#interface async 1
Router(config-if)#dialer in-band


The DTR pulse signals for three seconds on the interfaces in dialer group 1. This holds the DTR low so the modem can recognize that DTR has been dropped.

Router(config-if)#pulse-time 3 


Misconceptions:

 

None


Related Commands:

 

dialer map

 

dialer string

 


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