Ricoh A250 Service Manual page 578

BIT SWITCHES
Bit Switch 09
No. FUNCTION
0 Not used
1 New session within the
same call
0: Not accepted
1: Accepted
2-7 Not used
Bit switches 0A to 0F are not used.
Bit Switch 10 (Dch. Layer 1)
No. FUNCTION
0 Connection detector
0: Disabled 1: Enabled
1
Layer 1 T3 timer
Bit 2 1 Time
2
0 0
0 1 29 s
1 0 10 s
1 1 Not used
3 Layer 1 T4 timer
0: Not used 1: Used
4-5
Not used
6 INFO1 signal resend
0: Resend
1: No resend
7 Loop back 4 mode
0: Disabled 1: Enabled
Bit Switch 11 (Dch. Layer 2)
No. FUNCTION
0 Not used
1 Type of TEI used
0: Dynamic TEI
1: Static TEI
2 Static TEI value
to
7
A250
Do not change the factory setting.
0: If a new R:CSS is received, the machine sends
back S:RSSN.
1: If a new R:CSS is received, the machine sends
back S:RSSP. Set this bit to 1 for German PTT
approval tests.
Do not change the factory settings.
In most countries (including Europe), this should
be disabled.
This should be kept at 5 s (both bits at 0) for
normal operation. However, you may have to
5 s change this during PTT approval tests.
Set this bit to 1 for French PTT approval tests.
Do not change the factory settings.
0: If there is accidental noise in the INFO1 signal,
some DSUs may not reply to the INFO1 signal
with INFO2. Try changing this bit to 0, to resend
INFO1 before the machine displays "CHECK
INTERFACE".
This is normally kept at 0. However, set it to 1 for
British PTT approval tests.
Do not change the factory setting.
This is normally fixed at 0. However, some
networks may require this bit to be set at 1 (see
below). In this case, you may have to change the
values of bits 2 to 7.
Store the lowest bit of the TEI at bit 7 and the
highest bit of the TEI at bit 2.
Example: If the static TEI is 011000, set bits 3
and 4 to 1 and bits 2, 5, 6, and 7 to 0.
COMMENTS
COMMENTS
COMMENTS
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