ATT Definity Addendum 1 For Ds1, Dmi, Isdn Pri Instructions Manual

6. PORT TYPES/INSTALLATION COMPATIBILITIES
This chapter describes the operating modes, installation compatibilities, and port types supported by
DS1s. Because of differences between Generic 1 and Generic 2 software and hardware, appropriate
distinctions are identified and separate sections provided.
To date, DS1s have been well accepted. For both Generic 1 and Generic 2, DS1s were initially available
for providing digital tie trunks. Later versions of DS1s and later releases and versions of the switch...

6-2PORT TYPES/INSTALLATION COMPATIBILITIES
CAUTION
The 551V channel service units will only function with the ZCS line-code format. They
will not pass B8ZS bipolar violations. If the B8ZS line-code format is used for copper
carrier facilities, then the 551V ST (or equivalent) NCTE should be installed and optioned
accordingly.½
½
½
½
The CDMs are T1 multiplexers that provide an economical means to independently access any of the 24
channels from a DS1 or T1 facility. This access means is called...

PORT TYPES/INSTALLATION COMPATIBILITIES6-3
SIG. TYPE ANN11 REQAPPLICATIONS SUPPORTERD
Robbed Bit C or E
Voice-grade tie, DID, & Co trunks, OPS lines, connections to D4-channel banks, DSCs,
ACCUNET® switched digital
Proprietary C or E
24th Chan.AVD-tie trunks between System 85s and between System 85 and System 75½
DMI-BOS E24th Chan.Proprietary 24th-channel format applications plus connections to any endpoint conforming to
the AT&T Digital Multiplexed Interface Technical Specification. Examples include...

6-4PORT TYPES/INSTALLATION COMPATIBILITIES
4.
5.
6.
7.
8.
9.The DMI-BOS is available with the ANN11D, ANN11E, and TN722B circuit packs. The ANN11D is only used on
some R2V4 CIs. The ANN11E supersedes the ANN11C as the production model. For System 85 and Generic 2,
DMI-MOS is available with the ANN35 circuit pack (traditional modules) and with the TN767 or TN555 circuit pack
(universal modules).
For Generic 1, DS1, CO, and foreign exchange (FX) with TN767.
The OPS line option is initially available with...

PORT TYPES/INSTALLATION COMPATIBILITIES6-5
The TN767 circuit pack provides CO in addition to tie and DMI trunk types. That is, it provides 4-state
signaling (on-hook/off-hook signaling as well as ringing and no-ringing indication, and reverse battery).
NOTE: No restrictions are placed on the type of framing, signaling, or line-coding options used
with any of the port types. However, take care to assure that the interface options are compatible
with the distant endpoint (D4-channel banks are not now...

6-6PORT TYPES/INSTALLATION COMPATIBILITIES
SYSTEM 85 DS1, TRADITIONAL MODULES (ANN11)
The operating mode and supported port types for System 85 DS1 (ANN11) in traditional modules are
described next.½
½
Operating Modes
The two operating modes and grouping rules are described next.
Line-Only Mode
The line-only mode of a DS1 allows up to 24 analog stations (and optional modems) to be remoted½
through a DS1 facility. A D4-channel bank or its equivalent is required at the off-premises end.
NOTE: Each DSl/MFAT...

PORT TYPES/INSTALLATION COMPATIBILITIES6-7
Line+Trunk Mode
The line+trunk mode of a DS1 provides the capability of mixing both lines and trunks on the same DS1
facility.
The DS1 works (by default) in line+trunk mode, unless the backplane strap is configured. Here, a DS1
provides the equivalent of six analog circuit packs, each providing four ports. The line+trunk DS1 thus
requires six slots: one for the actual circuit pack and five as virtual slots. Virtual slots mean the same
thing for line+trunk mode...

6-8PORT TYPES/INSTALLATION COMPATIBILITIES
SLOT NUMBERS
0
51
62
73
8LEFT HALF CARRIER
13
1814
1915
2016
21RIGHT HALF CARRIER
LINE-ONLY
ANY
OTHER
EMPTYEMPTY
DS1 OR DMI
INTERFACE
PORT
CIRCUIT
PACK
EQUALS
EQUALS
ACTUAL
OPS
#1
(NOTE)VIRTUAL
OPS
#2
VIRTUAL
OPS
#3OTHER
CIRCUIT
PACKS
OPS PORTS/CARRIER SLOT
OPS #0
OPS #1
OPS #2
OPS #3
OTHERS
EQUALS
OPS #4
OPS #5
OPS #6
OPS #7
NOTE: Any half carrier that does not contain a line+trunk mode circuit pack
can have 1 or 2 functioning line-only modes.
Figure 6-1....

7. ADMINISTRATION OPTIONS AND REQUIREMENTS
Administering DS1/DMI/ISDN-PRI services involves configuring the software translations to know what
the equipment-carrier configuration and circuit pack types are and what services are to be done.
For System 85 R1 through R2V3, switch administration may be done from the system-management
terminal (SMT), maintenance and administration panel (MAAP), or Remote Maintenance,
Administration, and Traffic System (RMATS)-II. A System 85 R2V4 includes an additional...

7-2ADMINISTRATION OPTIONS AND REQUIREMENTS
Generic 1 may be administered from a Manager I terminal or by the Initialization and Administration
System (INADS). Generally, the administration procedures consist of executing the proper
administration and maintenance commands (from the command line feature set) and translating, in the
required order, the following screen-based forms:½
l
l
l
l
lDS1 circuit pack
Sync-plan
DMI-BOS (when required)
Trunk group (as required)
Trunk member assignments (as required)...