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

							ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 857-13
Field 14V3-V4
Field encodes and their descriptions are:
0
Selects the DS1/DMI-BOS channels used for both trunks and lines; the latter is
frequently called OPS. Each DS1/MFAT carrier will support a maximum of two
DS1s (slots 5 and 18).½
The ACCUNET switched digital service can be provided by setting up a trunk
group with encode 109. However, a DS1 must be optioned for RBS (procedure
260, field 8). The only other administration requirement is that the trunk groups
translation (field 3 of procedure 100, word 2) be enabled for 56K-bps encode one.
In a private network, this can be used to pass 56K-bps calls over robbed-bit
facilities.
The trunk group used to provide ACCUNET switched digital service may contain
as few as 1 or as many as 24 members. Therefore, the same DS1 may also be
used to provide CO, foreign exchange (FX), Wide Area Telecommunications
Service (WATS), Direct Inward Dialing (DID), and Remote Access trunks.
1
Selects the interface is used to provide DMI-BOS trunks. The DMI-BOS trunk
groups are defined by using procedure 100, word 1 (encode 108 and/or 109).
The DMI-BOS application uses the switch’s DS1 to provide a high-speed
multiplexed data interface for connecting to compatible computers. The computers
may be located on the same customer premises as the switch or many miles away.
The DS1/T1-carrier facilities are used between the switch and the remote
computers.
The DMI-BOS application provides 23 data channels plus 1 signaling channel.
Each data channel can be considered a 64K-bps channel. However, permissible
data rates are dependent on the trunk group translations selected in procedure 100,
word 2.
24th-channel signaling is the only required service/facility option. All others
(framing format and line-coding format) are DMI application independent.
However, the distant computer and all intermediate T1 transmission equipment
must be compatible.
CAUTIONA loop-timing problem can be created if the synchronization sources
are not administered correctly. The loop-timing problem exists as the
result of an error where both switch endpoints (for the same T1-span)
are administered as the primary. This causes the clock frequency to
vary widely and result in bringing down the switch. Loop-timing
problems can be avoided by following a correctly engineered network
synchronization diagram.½
½
½
½
½
½
½
NOTE: Neither DMI-BOS nor DMI-MOS may be used to provide
synchronization to the switch.
2
Selects the DS1/DMI-BOS facility that provides 24 lines, called OPS.
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							7-14ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85½
DS1/OPS Related Translations
When a DS1 facility is used exclusively for lines, it must be administered for RBS.
Also, the facility cannot be used as a synchronization reference.
When a DS1 is administered for lines (OPS), it provides 24 channels that terminate in
a remote D4-channel bank, CDM, or their equivalent.
Each analog line circuit pack provides eight circuits. Therefore, one DS1/OPS replaces
three analog circuit packs. Each DS1 or multifunction analog terminal (MFAT) carrier
will support a maximum of four DS1s (OPS applications). These may be located in
slots 0, 5, 13, and 18.½
The DS1 channels are assigned to slot and circuit locations according to the order in
which the module processor scans the equipment carrier. Table 7-1, DS1
Administration — Channel Versus Line Assignments, lists the equipment location
versus DS1 channel assignments for DS1/OPS.
Analog equipment location assignments are administered by procedure 000, word 1,
with field 8 translated a 2. The DS1/OPS channels are translated to equipment
locations (individual extensions) with procedure 000, word 1, with field 8 translated 9,
rather than with procedure 116 that was used for trunks.
5
Selects the DS1 used to provide 64K-bps data with DMI-MOS or ISDN-PRI trunk
facilities. When encode 5 is administered, procedure 262 is automatically
translated with standard default options. These default options should (later) be
checked for consistency with the distant end; refer to procedure 262.
TABLE 7-1. DS1 Administration — Channel Versus Line Assignments½
DS1 Channel
Slot/CircuitDS1 Channel
Slot/Circuit
1
0/0, 5/0, 13/0, or 18/0
130/4, 5/4, 13/4, or 18/4
2
1/0, 6/0, 14/0, or 19/0
141/4, 6/4, 14/4, or 19/4
32/0, 7/0, 15/0, or 20/0
152/4, 714, 15/4, or 20/4
4
0/1, 5/1, 13/1, or 18/1
160/5, 5/5, 13/5, or 18/5
51/1, 6/1, 14/1, or 19/1
171/5, 6/5, 14/5, or 19/5
62/1, 7/1, 15/1, or 20/1
182/5, 7/5, 15/5, or 20/5
7
0/2, 5/2, 13/2, or 18/2
190/6, 5/6, 13/6, or 18/6
8
1/2, 6/2, 14/2, or 19/2
201/6. 6/6 14/6. or 19/6
92/2, 7/2, 15/2, or 20/2
212/6, 7/6, 15/6, or 20/6
100/3, 5/3, 13/3, or 18/3220/7, 5/7, 13/7, or 18/7
111/3, 6/3, 14/3, or 19/3231/7, 6/7, 14/7, or 19/7
122/3, 7/3, 15/3, or 20/3242/7, 7/7, 15/7, or 20/7
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 857-15
Field 15V4 Only
ZCS facilities require that the contents of the D-channel be inverted to guarantee that
the minimum ones-density be maintained. This field shows whether the signaling
channel is inverted. Field encodes and their descriptions are:½
–
(Dash) means ZCS chosen in procedure 260. This is the default when ZCS is
chosen (this automatically inverts the D-channel).
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 BOS uses A and B bits for signaling, and the channel structure is such that the
ones-density is never violated.½
½
0
Selects inverted signaling information (contents of the 24th-channel). Either 0 or 1
must be administered for MOS. Recall that B8ZS is recommended for MOS-based
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.
1Selects uninverted signaling information (contents of the 24th-channel). The 1
option (no inversion) is recommended for use when B8ZS is administered.
Field 16
V4 Only
The DS1/DMI-BOS applications should be administered with a (–).
The DMI-MOS/ISDN-PRI applications should be optioned (0) for use when
connecting to metallic copper cable. Connections to fiber cable are not currently
supported. Therefore, option one is not applicable.
Field 17V4 Only
This field is added to bring a System 85 R2V4 into compliance with EIA specification
PIN-1429. This EIA specification relates to BOS; MOS is defined by a CCITT
specification. Field encodes and their descriptions are:½
½
–
0
1(Dash) means not applicable. The dash is appropriate for all applications of the
ANN35 circuit pack (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.
Selected when connecting to a DS1/DMI-BOS that uses the Canadian style
signaling as specified in PN-1429.
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							7-16ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85
Procedure 262 Word 1: ISDN Board Parameters
Procedure 262 is used in System 85 R2V4 and Generic 2 to administer DMI-MOS (ANN35) for other
service/facility options (DMI-MOS/ISDN-PRI only). Figure 7-5, Procedure 262 Word 1: ISDN Board
Parameters, depicts procedure 262, word 1.½
ENHANCED MODE – PROCEDURE:  262, WORD:  1
ISDN BOARD PARAMETERS
EQUIPMENT LOCATION
1.
2.3.
4.Module:
Cabinet:
Carrier:
Slot:
PRI PARAMETERS
5.
6.
7.Interface Type:
Facility Test Code:
Terminal Endpoint Identifier:
PRI LAYER 2 PARAMETERS
8.
9.
10.
11.
Timer T203:
Timer T200:
Counter N200:
Counter K:
Connected to CC0 ON-LINE
enter command:
Figure 7-5. Procedure 262 Word 1: ISDN Board Parameters
Fields 1-4V4 Only
Assigns the circuit pack to an equipment location. These include the module number
(0 through 30), cabinet number (0 through 7), DS1/MFAT carrier number (0 through
3), and slot number (5 or 18).
NOTE: Entries for these four fields are the default values from translating a 5 in
field 14 of procedure 260. These entries should always be correct.
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 857-17
Field 5V4 Only
Assigns the interface type or side. The default option is (0) for user side. Alternately,
a (1) should be administered for network side. The configuration of the network
should be analyzed to determine if the (0) option is appropriate.½
For MOS-type facilities (such as DMI-MOS and ISDN-PRI), each link must be
segmented into user and network sides. Each System 85 R2V4 MOS-based
transmission facility connecting to the public network will always be the user side (0),
while the network switch (for example, a 5ESS or 4ESS) is defined as the network side
(1). For private network DMI-MOS and ISDN-PRI connections, additional care must
be exercised in defining user and network sides. Specifically, only one end must be
administered user side (0), while the alternate must be defined as the network side (1).
If the private network node is a tandem switch, then that node may function as both
user side and network side depending on the particular facility.½
½
½
NOTE: For System 85 R2V4 DMI-MOS to host computers equipped with MOS,
the computer should always be assigned as the network side.½
½
Field 6V4 Only
Administers the facility test code. For most installations it is desirable to enable or
establish permission, thus allowing selected maintenance software to test the DMI-
MOS/ISDN-PRI transmission facility on a demand basis.
Procedure 648 contains several tests that may be done on a demand basis (by executing
procedure 648) when facility test code 1, 2, or 3 is administered).
The DMI-MOS/ISDN-PRI communication protocol consists of three layers or levels.
Level 1 is the physical layer. Level 2 is the data link layer. Level 3 is the network
layer, also called the link access procedure on the D-channel (LAPD).½
Field encodes and their descriptions are:
0
1
2
3Disables or prohibits maintenance testing from being done on the specified
(module, cabinet, carrier, and slot) transmission facility.
Selects level-2 testing via procedure 648.
NOTE: This encode should be translated for all DMI-MOS to host computer
links.½
½
Selects level-3 (network layer) testing. Level 3 does loopback testing and requires
the use of a separate special test line (SN261C Analog Digital Facility Test
Circuit).
Permits both level-2 and level-3 tests to be done.
NOTE: This encode should be translated for all ISDN-PRI connections that
terminate on a 4ESS.½
½
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							7-18ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85
Field 7V4 Only
This field will accept encodes within the range of 0 through 126. However, all point-
to-point (nonswitched) links, such as an System 85 R2V4 DMI-MOS link to a host
computer, must be administered with encode 0. Encodes 1 through 126 are not used at
this time.½
Field 8 V4 Only
The field will accept encodes ranging from 0 through 255, corresponding to 1-second
intervals for an elapsed time of up to 4 minutes and 15 seconds. The default value for
this T203 timer is 30, meaning 30 seconds.
This timer monitors the facility data link and specifies the maximum time allowed
without frames being exchanged on a data link layer connection.
Field 9V4 Only
The field will accept encodes ranging from 0 through 255, which corresponds to 0.1
second per increment for a maximum range of up to 25.5 seconds. The default value
for this T200 timer is 10, meaning 1 second. This timer monitors multiple-frame
operations on the data link layer.
Field 10V4 Only
This field defines a value for the N200 counter. The value determines the maximum
number of frame retransmissions. The permitted range is from 1 through 10, with 3
being the default value.
Field 11V4 Only
This field defines a value for the K counter. The value determines the maximum
number of outstanding or unacknowledged information I frames. The range of
permitted values is from (1 through 10), with 7 being the default value.
NOTE: Administration values for these procedure 262 timers and counters must
be coordinated with the other terminating end.
Procedure 354 Word 3: NPA-NXX Digits Assignment
This word and procedure are used to administer the ISDN numbering plan area (NPA). Depending on
the switch configuration, there may be more than one ISDN numbering plan. Contents of these fields
make up a part of the station identification number (SID). The SID is transmitted in the calling number
IE (part of the setup message) or connect party number (part of the connect message). Figure 7-6,
Procedure 354 Word 3: NPA-NXX Assignment (System 85 R2V4), depicts procedure 354, word 3.½
½
½
NOTE: This word need not be translated unless the application requires that SID or the connected
number be transmitted to the network.
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 857-19
ENHANCED MODE - PROCEDURE: 354, WORD: 3
NPA-NXX ASSIGNMENT
1.
2.
3.
4.NPA-NXX Designator:
NPA:
NXX:
Thousands Digit:
Connected to CC0 ON-LINE 
enter command:
Figure 7-6. Procedure 354 Word 3: NPA-NXX Assignment (System 85 R2V4)½
Field 1
Field 2
Field 3
Field 4This field should be translated for both private- and public-network connections. The
NPA-NXX designator is a 2-digit field and must be within the range of 1 through 99.
This 3-digit field should contain the numbering plan area (NPA), which is also called
the area code. Assignment is therefore dependent on the particular location and
application.
This 3-digit field should specify the NXX, which is also called the office code of the
local exchange company (LEC). Permitted values must be those numbers within the
range of 200 through 999 and should be the office code of the local exchange.
This 1-digit field specifies the thousands digit. When not used, it should contain (–).
When used, digits 0 through 9 may be assigned. Use this field only with three-digit
dial plans. Do not use it with four- or five-digit dial plans.½
½
Procedure 000 Word 4: NPA-NXX Index Designator
Depending on how the switch is used, procedure 000, word 4, may or may not be translated.
Specifically, field 4 of word 4 is used for partitioning, ISDN, or both, and must be translated when:
a.The switch transmits the calling party number or connected number to the network
b.The switch provides unique extension number partitions
Field 4 of procedure 000, word 4, need not be translated when the switch does not transmit SID or
connected number to the network (public or private).½
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							7-20ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85
If the switch contains more than one office code, multiple NPA/NNX designators may be needed.
Figure 7-7, Procedure 000 Word 4: NPA-NXX Partition Assignment (System 85 R2V4), depicts
procedure 000, word 4.½
ENHANCED MODE -PROCEDURE: 000, WORD: 4
EXTENSION NPA-NXX/PARTITION ASSIGNMENT
1.
2.
3.
4.First Extension:
Last Extension:
Extension Partition:
NPA-NXX Designator:
DISPLAY ONLY
5.
Invalid Extension:
Connected to CCO ON-LINE
enter command:
Figure 7-7. Procedure 000 Word 4: NPA-NXX/Partition Assignment (System 85 R2V4)
Field 1Assigns a single extension number or the first extension number for a block of
numbers. The single number or block of numbers will be unique in terms that they
relate to a single extension partition identification.
Field 2
Assigns the last extension number for a block of numbers.
Field 3Assigns the extension partition identification for the tenant services feature.
Field 4Associates an NPA-NXX Designator with a range of extensions.½
Procedure 210 Word 2: LDN, NPA, and NNX Attendant Partition Assignments
This procedure is used to configure the attendant consoles into groups known as attendant partitions.
Also, listed directory number (LDN) and NPA-NXX assignments are completed, thus relating these
assignments to a particular attendant console or attendant partition. Figure 7-8, Procedure 210 Word 2:
Attendant Partition Assignments (System 85 R2V4), depicts procedure 210, word 2.½
½
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 857-21
1.
2.
3.
4.5.
Console Number:
Attendant Partition:
Control:
LDN:
NPA-NXX Designator:
Connected to CC0 ON-LINE
enter command:ENHANCED MODE - PROCEDURE: 210, WORD: 2
CONSOLE ASSIGNMENTS - ATTENDANT PARTITIONS
Figure 7-8. Procedure 210 Word 2: Attendant Partition Assignments (System 85 R2V4)½
Field 1
Field 2
Field 3
Field 4
Field 5Translates a console number. Permitted encodes are any 2-digit number within the
range of 1 through 40.
NOTE: The console must have previously been assigned in procedure 210, word
1.
Assigns the attendant partition number. Permitted encodes are any unused number
within the range of 0 through 40.
Assigns the one console in the attendant partition that will be the controlling console.
All other members of this group must have control denied. Field encodes and their
descriptions are:
0
1For all but the controlling console
Only for the controlling console.
Assigns or associate the LDN with a particular console or console partition. This
number depends on the switch or private network numbering plan.
Assigns or associate the NPA-NNX designator with the console. The encode must
have been previously defined in procedure 354, word 3.
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4 
						

							7-22ADMINISTRATION OPTIONS AND REQUIREMENTS — SYSTEM 85
Procedure 010 Word 4: Line Side (B-Channel) BC and ISDN Routing Options
Figure 7-9, Procedure 010 Word 4: Terminal COS Restrictions (System 85 R2V4), depicts proceure½
010, word 4.
ENHANCED MODE -PROCEDURE : 010, WORD: 4
EXTENSION CLASS OF SERVICE - RESTRICTIONS
1.
2.
3.
4.Class of Service:
Maximum Precedence Level:
Bearer Capability:
ISDN Routing:
Connected to CC0 ON-LINE
enter command:½
Field 1
Field 2Figure 7-9. Procedure 010 Word 4: Terminal COS Restrictions (System 85 R2V4)
When ISDN is administered, each COS assignment must have an associated BC and
ISDN routing assignment. That is to say that whenever ISDN is enabled, all COS
assignments must also be translated for this procedure. COS assignments must be
within the 2-digit range of 1 through 63.
This field’s encodes are only useful for AUTOVON applications. Dash (–) is
appropriate for ISDN applications.
ADDENDUM 1 (December 1990) to 555-025-101, Issue 4