Ricoh A230, Руководство по обслуживанию, Страница: 872 / 1134

BIT SWITCHES
2-8
A230/A231/A232 SM
Bit Switch 16: D channel layer 3 (Approval)
No. FUNCTION COMMENTS
5 Indicated bearer capabilities
0: 56 kbps 1: 64 kbps 1: 64 kbps calling is indicated in the Bearer
Capabilities, but communication is at 56 k. Use
this bit if the machine is connected to a network
which does not accept a 56 kbps data transfer
rate as a bearer capability.
6 Not used Do not change the factory settings.
7
Bit Switch 17: CPS Code Used for G4 to G3 Fallback - 1
No. FUNCTION COMMENTS
0
to
6
Condition for fallback from G4 to G3
Bits 0 to 6 of bit switch 17 contain a CPS code, and bits 0 to 6 of bit switch 18
contain another CPS code. If a CPS code is received which is the same as
either of these, communication will fall back from ISDN G4 mode to ISDN G3
mode.
The CPS codes must be the same as those specified in table 4-13 of CCITT
recommendation Q.931.
Examples: Bit 6
5 4 3 2 1 0
1 0 0 0 0 0 1 CPS code 65
1 0 1 1 0 0 0 CPS code 88
For the codes in bits 0 to 6 of bit switches 17 and 18 to be recognized, bit 7 of bit
switch 17 must be 1. Also, bit 0 of the Communication Switch 07 must be at 0, or
Fallback from G4 to G3 will be disabled.
7 This bit determines whether fallback from G4 to G3 occurs on receipt of one of
the CPS codes programmed in bit switch 17 or 18, or on receipt of a certain
standard code.
0: Fallback occurs on receipt of any of the following CPS codes:
UK (EuroISDN mode) - #3, #18, #57, #58, # 63, # 65, #79, #88, and #127
Germany (1TR6 mode) - #3, #31, #53, #58, #62, #89, and #90
France - #3, #65, #88, and #113
Others - #3, #65, and #88
1: Fallback from G4 to G3 occurs on receipt any of above CPS codes or one of
the CPS codes programmed in bit switch 17, 18, 1A, 1B, or 1C
Bit Switch 18: CPS Code Used for G4 to G3 Fallback - 2
FUNCTION COMMENTS
0
to
6
Condition for fallback from G4 to G3
See the explanation for bits 0 to 6 of bit switch 17
7 This bit helps to choose the CPS code set for G4 to G3 fallback.
0: Fallback occurs on receipt of the CPS code set which is specified by the
country code setting.
1: Fallback occurs on receipt of the UK CPS code set (#3, #18, #57, #58, # 63, #
65, #79, #88, and #127) even if another counry code is programmed.