Gestetner A193 Service Manual page 742

Bit Switch 10 (Dch. Layer 1)
FUNCTION
7 Loop back 4 mode
0: Disabled 1: Enabled
Bit Switch 11 (Dch. Layer 2)
FUNCTION
0 Not used
1 Type of TEI used
0: Dynamic TEI
1: Static TEI
2 Static TEI value
to
7
Bit switch 12 is not used. Do not change any of the factory settings.
Bit Switch 13: D channel layer 3 (Attachment IE in S: SETUP)
FUNCTION
0 Not used
1
2 Attachment of calling ID
0: No 1: Yes
3 Attachment of the
Lower Layer
Capabilities
0: No 1: Yes
4 Attachment of the
Higher Layer
Capabilities
0: Yes 1: No
5 Not used
to
7
(A644) ISDN
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 such as
the Northern Telecom ISDN 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.
This is used in the USA with the DMS100 (Northern Telecom
ISDN) exchanger.
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.
Do not change the factory settings.
Normally, this bit should be at 0, because most networks add
the calling ID to the SETUP signal to the receiver.
However, some networks may require the machine to add
this ID. Only in this case should this bit be at 1.
This bit determines whether Lower Layer Capabilities are
informed in the [SETUP] signal or not.
Keep this bit at 0 in most cases.
This bit determines whether Higher Layer Capabilities are
informed in the [SETUP] signal or not.
Keep this bit at 0 in most cases.
Do not change the factory settings.
2-5
BIT SWITCHES
COMMENTS
COMMENTS
COMMENTS
SM