Gestetner A193 Service Manual page 749

BIT SWITCHES
Parameter Switch 06
FUNCTION
0 Layer 3 protocol
0: ISO8208
1: T.70NULL
1 Not used
2
3
4 Packet modulus
0: 8 1: 128
5 Not used
6
7
Parameter Switch 07
FUNCTION
0
Packet size
Bit 3 2 1 0 Value
1 0 1 1 1 128
1 0 0 0 256
2 1 0 0 1 512
1 0 1 0 1024
3 1 0 1 1 2048
4 Not used
to
7
Parameter Switch 08
FUNCTION
0 Packet window size
Bit 3 2 1 0 Value
1 0 0 0 1 1
0 0 1 0 2
2
and so on until
1 1 1 1 15
3
4 Not used
to
7
SM
Set this bit to match the type of layer 3 signalling used by the
ISDN.
The dedicated parameters have the same setting for specific
destinations.
Do not change the default settings.
Do not change the default setting, unless the machine is
experiencing compatibility problems.
Do not change the default settings.
This value is sent in the CR packet. This value must match
the value stored in the other terminal, or communication will
stop (CI will be returned). If the other end returns CI, check
the value of the packet window size with the other party.
Note that this value must be the same as the value
programmed for the transport block size (G4 Parameter
Switch B, bits 0 to 3).
Normally, do not change the default setting.
Do not change the default settings.
This is the maximum number of unacknowledged packets
that the machine can send out before having to pause and
wait for an acknowledgement from the other end.
This should be kept at 7 normally.
If the packet modulus (G4 Parameter Switch 6, bit 4) is 8, the
packet window size cannot be more than 7. However, if the
packet modulus is 128, the window size can be up to 15.
Also, if the layer 3 protocol setting (G4 Parameter Switch 6,
bit 0) is at IS8208, the packet window size cannot be more
than 7.
Do not change the default settings.
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COMMENTS
COMMENTS
COMMENTS
(A644) ISDN