HP ProCurve Secure Router 7203 dl Advanced Management And Configuration Manual page 108

Configuring Backup WAN Connections
Configuring Demand Routing for Backup Connections
3-28
You can configure more than one connect sequence for a demand interface.
For example, you may want to configure more than one connect sequence if
the main office has more than one dial-up line that you are using for backup.
Then, if one ISDN line is in use, the ProCurve Secure Router can dial another
line to establish a connection. You may also want to configure more than one
connect sequence to connect to a different router at the main office. Then if
one router at the main office is down, the router at a branch office can still
connect to the main office.
To configure a connect sequence, enter the following command from the
demand interface configuration mode context:
Syntax: connect-sequence <sequence-number> dial-string <string> [<resource-
type>] [busyout-threshold <value>]
Replace <sequence-number> with a number between 1 and 65535 to identify
this set of connection instructions.
Replace <string> with the telephone number that the demand interface
should dial to make the connection.
Replace <resource-type> with one of the options listed in Table 3-4. The
option you enter will limit this connection to a particular type of dial-up
connection.
Table 3-4. Defining a Resource Type for Connection Instructions
Option Description
isdn-64k Any dial resource can be used, but if ISDN is used, the call must be placed
using 64 KB.
isdn-56k Any dial resource can be used, but if ISDN is used, the call must be placed
using 56 KB.
forced-analog Only analog resources can be used.
forced-isdn-64k Only ISDN resources can be used, and the call must be placed using
64 KB.
forced-isdn-56k Only ISDN resources can be used, and the call must be placed using 5
6 KB.
For example, if you are using ISDN backup, you should enter the forced-isdn-
64k or forced-isdn-56k options, depending on the speed of the B channel.
Your service provider should tell you which option to use.