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ADMINISTRATION OPTIONS AND REQUIREMENTS — GENERIC 2
7-63
Field 15
Some applications require that the contents of the signaling channel or the ISDN-
PRI D-channel be inverted to guarantee that the minimum ones density be
maintained. This field shows whether the signaling channel is inverted or not. Field
encodes and their descriptions are:
–
0
1
(Dash) not applicable or ZCS line coding is translated in field 9. The dash is
appropriate for all applications of the ANN11 circuit pack. RBS does not use
the 24th-channel to transmit signaling information. 24th-channel signaling via
the BOS interface uses A and B bits for signaling and the channel structure is
such that the ones-density is never violated.
Assigns that the signaling information, contents of the ISDN-PRI D-channel, is
inverted.
Either 0 or 1 must be administered for ISDN-PRI. Recall that B8ZS is
recommended for ISDN-PRI applications. However, not all transmission
facilities will permit B8ZS on an end-to-end basis. Administration must be
coordinated with the network facilities/distant end to ensure compatibility.
NOTE: This field must be a dash (–) when ZCS line coding is selected
with ISDN.
Assigns that the signaling information, contents of the ISDN-PRI D-channel, is
not inverted. The 1 option (No Inversion) is strongly recommended for use
when B8ZS is administered.
Field 16
The DS1/DMI-BOS applications should be administered with a dash (–).
The DMI-MOS/ISDN-PRI applications may be optioned (0) indicating metallic
copper cable facilities. The (1) option is used to show nonmetallic fiber cable.
NOTE: Terminating fiber cable directly on the DS1/MFAT carrier or universal
module port carrier is not currently supported. Therefore, the (1) option is not
applicable.
Field 17
This field is added to bring System 85 R2V4 into compliance with EIA specification
PIN-1429. This EIA specification relates to bit-oriented-signaling (BOS); message-
oriented-signaling (MOS) is defined by a CCITT specification.
Field encodes and their descriptions are:
–
0
1
(Dash) not applicable
NOTE: The dash is appropriate for all applications of the ANN35 and
TN767 circuit packs (both DMI-MOS and ISDN-PRI).
Appropriate for all applications of DS1/DMI-BOS except when connecting to a
switch that uses the Canadian style of signaling.
Used when connecting to a DS1/DMI-BOS that uses the Canadian style signaling
as specified in PN-1429.