Configure serial interfaces
Digi TransPort User Guide
275
Rate Adaption parameters
The router supports two rate adaptation protocol (Adapt) instances. Each instance enables the
selection and configuration of the protocol to be used for rate adaptation over an ISDN B
channel. The supported protocols are; V.110, V.120 and X.75. Depending on which protocol is
selected, there may be an associated LAPB instance (distinct from the two general purpose LAPB
instances), as for example, when V.120 is used in error-corrected (multi-frame) mode. Clicking the
triangle at the left of the blue bar opens up the two instances described below.
This page displays the configuration parameters directly relevant to the rate adaptation protocol
only, LAPB configuration pages are to be found here in the
Configuration > Network > Legacy
Protocols > X.25 > LAPB
page. When configuring LAPB parameters, be aware that LAPB 2 is used
for adapt 0 and LAPB 3 is used for adapt 1.
Attempt to redial the connection n times if rate adaption has not been negotiated
If an ISDN connection is established, but rate adaption is not negotiated, the value in this text
box specifies how many times the router should drop the connection and redial it.
Drop the connection if it is idle for h hrs m mins s secs
The time to wait before dropping the connection if the connection becomes idle.
Leased line mode
When enabled, allows the router to attempt to maintain the connection automatically once it
has been established.
Enable TCP rate adaption
When enabled, enables use of rate adaptation when using a TCP connection rather than an
ISDN line. When enabled, the following controls become enabled:
Connect to IP Address a.b.c.d Port n
When using a TCP connection, these text entry boxes allow the user to specify the IP address
and port number that the protocol should use.
Listen on Port
The port number that the router is listening on when in socket mode.
