Filter
Top Products
Table 13-1. X.25 PDN Parameter Bitmap Argument Values
Bit Number
Function
ON (logical 1)
OFF (logical 0)
20 to 31
Reserved for
future use
n/a n/a
19
LINE_MODE X.25 line behaves as a DCE at
network and data-link layers, but
remains DTE at physical layer.
X.25 line behaves as a DTE at
network, data-link, and physical
layers.
18
FRAME LEVEL
KEEP_ALIVE
An RR with Poll Bit set is
generated when the link has been
idle for 2 seconds. In the absence
of DCE response, normal retry and
link recovery procedures will be
initiated.
The link is not polled when it has
been idle.
17
X.25 The 1984 version of X.25 is
supported.
The 1980 version of X.25 is
supported.
16
ADDRESS
SUPPRESSION
The local X.121 address is not
included in any call packet sent
from the device.
The local X.121 address is included
in all locally originated call packets.
15
LINE RESTART A RESTART packet is transmitted
whenever Frame Level is
established.
Frame Level establishment does not
generate a RESTART packet.
14
DATAPAC
FACILITIES
Enables special DATAPAC
facilities checking.
Disables special DATAPAC facilities
checking.
13
UNASSIGNED
LCN
X.25 clears calls received on an
invalid LCN.
X.25 ignores calls received on an
invalid LCN.
12
CLEAR LENGTH X.25 rejects CLEAR INDICATION
and CLEAR CONFIRMATION
packets if they contain facilities or
user data.
X.25 accepts CLEAR INDICATION
and CLEAR CONFIRMATION
packets even if they contain
facilities or user data.
11
TIMER DIAG If a T20 (3 minutes) timeout
occurs, a RESTART packet is
retransmitted with the original
diagnostic code.
If a T20 timeout occurs, a RESTART
packet is retransmitted with a “T20
Expired” diagnostic code.
X.25 Service
Parameters
13
X.25 Service Parameters
Parameters and Options
13-13