Ricoh A250 Service Manual page 585

Parameter Switch 02
No. FUNCTION
0 Data rate (kbps)
1 Bit 1 0 Setting
0 0 64 kbps
0 1 56 kbps
2-3
Not used
4
Transmission mode
5 Bit 5 4 Mode
0 0 CS
6-7 Not used
Parameter Switch 03
No. FUNCTION
0
Link modulus
0: 8 1: 128
1-7 Not used
Parameter Switch 04 is not used. Do not change any of the default settings.
Parameter Switch 05
No. FUNCTION
0 Link timer (D-channel layer
1 2 T1 timer)
2 Bit 3 2 1 0 Value
3 0 0 0 0 0 s
0 0 0 1 1 s
0 0 1 0 2 s
and so on until
0 0 1 0 10 s
4-7
Not used
Parameter Switch 06
No. FUNCTION
0 Layer 3 protocol
0: ISO8208
1: T.70NULL
1-3
Not used
4
Packet modulus
0: 8 1: 128
5-7 Not used
SM
COMMENTS
Other settings: Not used
Do not change the default settings.
Other settings: Not used
Do not change the default settings.
COMMENTS
This setting determines whether protocol frame
numbering is done using 3 bits (0 to 7 then start
again at 0) or 7 bits (0 to 127 then start again at
0). Set this bit switch to match the network's
specifications.
Do not change the default settings.
COMMENTS
The link timer is the maximum allowable time
between sending a protocol frame and receiving a
response frame from the remote terminal.
Do not change the default settings.
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.
1-15
BIT SWITCHES
A250