ISDN Unit
A895
BIT SWITCHES
SM 2-3 A265/A267
Bit Switch 04
No. FUNCTION COMMENTS
0-4
Not used Do not change the factory settings.
5
RCBCTR
0:
Not valid
1:
Valid
This bit is used in Germany; set it to 1 for German
PTT approval tests.
1:
RCBCTR counts consecutive R:RNR signals. If
the counter reaches the value of N2, the link is
disconnected.
6-7
Not used Do not change the factory settings.
Bit Switch 05
No. FUNCTION COMMENTS
0
Not used Do not change the factory setting.
1
Logical channel number
(LCN)
0:
Not controlled
1:
Fixed at 01
This bit is normally 0. However, some networks
may require a fixed LCN. In such cases, this bit
should be 1, and you may have to set a different
value for the LCN using G4 Parameter Switch 0A.
2
Protocol ID check
0:
Yes
1:
No
The Protocol ID is in the CR packet.
3-7
Not used Do not change the factory settings.
Bit Switch 06
No. FUNCTION COMMENTS
0
Inclusion of the DTE
address in the S:CR packet
0:
No
1:
Yes
When the CR packet format matches ISO8208
protocol, some networks may require this bit to be
set at 1.
This bit is only effective if bit 0 of G4 Parameter
switch 06 is at 0.
1
Calling and called DTE
addresses
0:
Not used
1:
Used
This is only for packet networks. The CR packet
should contain the rx side's DTE address, but
does not have to include the tx side's; it can
include it as an option.
2-7
Not used Do not change the factory settings.
Bit switches 07 and 08 are not used.