Ricoh A230 Service Manual page 876

BIT SWITCHES
Parameter Switch 06
No. 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
No. FUNCTION
0 Packet size
1 Bit 3 2 1 0 Value
2 0 1 1 1 128
3 1 0 0 0 256
1 0 0 1 512
1 0 1 0 1024
1 0 1 1 2048
4
Not used
to
7
Parameter Switch 08
No. FUNCTION
0 Packet window size
1 Bit 3 2 1 0 Value
2
0 0 0 1 1
3
0 0 1 0 2
and so on until
1 1 1 1 15
A230/A231/A232
COMMENTS
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.
COMMENTS
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.
COMMENTS
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.
2-12
SM