User`s guide

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By default it is “Off”, in which case the length of the header is NOT included in the value.
For example, say we had one byte of data of value 67 to encode. Then “00 01 67” is the
encoding if this parameter is set to “Off” as the length (00 01) is 1 because the length does
not include the length of the header. When set to “On” the length of the IP header is
included in the value, i.e. “00 03 67” is the encoding as the header bytes are included.
Related CLI Commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
X25gen 0 lapd_cnf_addr
1 = enabled,
0 = disabled
When answering a X.25 call, use
the addresses from CALL packet in
the CALL CNF packet.
LAPD setting
X25gen 0 lapd_cnf_addr
1 = enabled,
0 = disabled
When answering a X.25 call, use
the addresses from CALL packet in
the CALL CNF packet
LAPB setting
X25gen 0 xot_cnf_addr
1 = enabled,
0 = disabled
When answering a X.25 call, use
the addresses from CALL packet in
the CALL CNF packet
XoT setting
X25gen 0 reset_xotpvc_ini
1 = enabled,
0 = disabled
Reset XOT PVC if the router is the
Initiator
X25gen 0 reset_xotpvc_resp
1 = enabled,
0 = disabled
Reset XOT PVC if the router is the
Responder
X25gen 0 en_incl_iphdr
1 = enabled,
0 = disabled
Include length of header in IP
length header
LAPB > LAPB n
Configuration – Network > Legacy Protocol > X.25 > LAPB > LAPB n
LAPB (Link Access Procedure Balanced) is a standard subset of the High-Level Data Link
Control (HDLC) protocol. It is a bit-oriented, synchronous, link-layer protocol that provides
data framing, flow control and error detection and correction. LAPB is the link layer used by
X.25 applications.
On Digi TransPort routers LAPB can be used over ISDN or over a synchronous serial port.
Use: Serial port Port x (in Synchronous Mode)
To use the LAPB instance over a synchronous serial port enable this setting and select a
serial port number. To configure settings of the synchronous port such as speed and clock
source navigate to Configuration - Network > Interfaces > Serial > Serial Port n >
Sync Port n.
Use: ISDN
Enable this setting to use LAPB over ISDN.
Mode DTE or DCE
Determines whether LAPB will behave as DTE (Data Terminal Equipment) or DCE (Data
Circuit-terminating Equipment) in an X.25 protocol sense. (Physical DTE vs. DCE wiring
cannot be changed by configuration.)