Westermo MR Series - Manual (Page 169)

169 6622-3201
Web Interface and Command Line Reference Guide www.westermo.com
TEI:
Each ISDN terminal device connected to your ISDN basic rate outlet must be assigned a unique
Terminal Endpoint Identifier (TEI). In most cases, this is negotiated automatically. In some cases
however, it may be necessary to assign a fixed TEI.
When TEI is set to 255, the TEI is negotiated with the ISDN network. To use a fixed TEI set the
TEI parameter to the appropriate value as specified by your service provider.
Window size:
This specifies the transmit window size when using D-channel X.25. The default is 7.
Tx throughput (bps):
The Tx Throughput parameter is used in conjunction with the Rx Throughput parameter to limit
the maximum data throughput on a LAPD link in bits per second. If this parameter is set to 0,
the unit will transmit data across the LADP link as fast as possible whilst observing hardware or
software flow control if enabled.
When set to a value greater than 0, the unit will limit the rate at which data is transmitted over
the LAPD link Note that if multiple PAD or IP instances are sharing this LAPD instance, the
maximum transmis sion rates of all instances will be limited.
Rx throughput (bps):
The Rx Throughput parameter is used in conjunction with the Tx Throughput parameter to limit
the maximum data throughput on a LAPD link in bits per second. If this parameter is set to 0,
the unit will transmit data across the LADP link as fast as possible whilst observing hardware or
software flow control if enabled.
When set to a value greater than 0, the unit will limit the rate at which data can be received
over the LAPD link when it detects that receive throughput exceeds the specified rate. Note
that if multiple PAD or IP instances are sharing this LAPD instance, the maximum transmis sion
rates of all instances will be limited.
D64S mode:
D64S mode is a mode in which ISDN B-channel(s) may be used without the need to use any
D channel protocol. It is sometimes referred to as “nailed up” IDSN. To enable this mode for this
LAPD instance, set the D64S mode parameter to On and ensure that the TEI parameter is set
to
255. This means that for any application that uses ISDN (e.g. PPP) then it will use D64S mode.
Note:
You may only use this mode if it is supported by your ISDN service provider.
First D64 B-channel:
When using D64S mode there is no dialling protocol to negotiate which B-channel to use. This
must therefore be specified using this parameter. To use B1 set the parameter to 1, or select 2
to use B2 (if another channel is requested from an application then it will use the other unused
B channel).
Using Text Commands
From the command line, use the lapd command to configure or display LAPD settings. To display
current settings for a LAPD instance enter the command:
lapd <instance> ?
where <instance> is 0, 1 or 2. To change the value of a parameter use the command in the for-
mat:
lapd <instance> <parameter> <value>