Primary Rate Interface (PRI) and T1 Feature

At a Glance

Users Affected

Telephone users, operators, data users

Reports Affected

DS1 Information, PRI Information, SMDR

Modes

Key, Hybrid/PBX

Telephones

All (display support on 4400-Series, MLX, ETR, and MLS telephones)

System Programming
  
System-wide

Specify modules that provide primary, secondary, and tertiary clock synchronization and source of clock synchronization; also activate/deactivate clock:

  • LinesTrunks or More ClockSync
  100D Module

Specify type of facility connected to 100D module:

  • LinesTrunks LS/GS/DS1 Type

Specify framing format for 100D module:

  • LinesTrunks LS/GS/DS1 FrameFormat

Specify line coding for 100D module:

  • LinesTrunks LS/GS/DS1 Suppression

Specify line compensation between 100D module and channel service unit (CSU) or far end:

  • LinesTrunks LS/GS/DS1 Line Comp

Specify type of CSU equipment provided by Central Office:

  • LinesTrunks LS/GS/DS1 Channel Unit
  PRI

Specify the type of switch:

  • LinesTrunks PRI SwitchType

Assign telephone numbers to PRI lines:

  • LinesTrunks PRI Telephone Number

Assign B-channels to group:

  • LinesTrunks PRI B-ChannlGrp B-channels

Assign PRI lines to B-channel groups:

  • LinesTrunks PRI B-ChannlGrp Lines

Specify type of network service for each B-channel group:

  • LinesTrunks PRI B-ChannlGrp
    NetworkServ

Specify whether telephone number to send to network for outgoing calls should be copied from line telephone number:

  • LinesTrunks PRI B-ChannlGrp CopyNumber

Specify telephone number to send to network for outgoing calls on PRI lines:

  • LinesTrunks PRI NumberToSend

Assign test line telephone number for each 100D module:

  • LinesTrunks PRI Test TelNum

Set timer and counter thresholds for each 100D module:

  • LinesTrunks PRI Protocol Timers

Assign link layer address or Terminal Equipment Identifier (TEI) of equipment connected to each D-channel:

  • LinesTrunks PRI Protocol TEI

To select T1 emulation:

  • LinesTrunks LS/GS/DS1 Enter Type T1 Enter Select type of emulation

To select T1 Switched 56 Data and program Channel
Signaling:

  • LinesTrunks LS/GS/DS1 Enter Type T1 Enter or More S56 Data Enter AssignChan-Signling Enter Select Direction , Intype , Outtype , AnsSupv , Disconnect , Inmode , or Outmode

To select T1 All Switched 56 Data and program Channel Signaling:

  • LinesTrunks LS/GS/DS1 Enter Type T1 Enter or More All S56 Data Signling Enter Select Direction , Intype , Outtype , AnsSupv , Disconnect , Inmode , or Outmode

To select T1 Switched 56 Data and program Incoming Routing Table:

  • LinesTrunks LS/GS/DS1 Enter Type T1 Enter or More S56 Data Enter Incom Routing Table Select Expected Digits, Add Digits, or Delete Digits Enter

To select T1 All Switched 56 Data and program Incoming Routing Table:

  • LinesTrunks LS/GS/DS1 Enter Type T1 Enter or More ALL S56 Data Incom Routing Table Select Expected Digits, Add Digits, or Delete Digits Enter

Maximums

General

  100D modules

 

 

 3

PRI-specific

B-channels

Lines (total)

Digits for each number assigned to a PRI line

ISDN lines for each B-channel group

B-channels for each B-channel group

 

 69

 72

 12

 

 24


 23

Digits for each telephone number sent to network for outgoing calls

Digits for test trunk telephone number

PRI Dial Plan Routing Table (Hybrid/PBX)

Number of entries

Digits for each pattern

Digits to delete

Digits to add

 12



 12

 

 

 16 (0-15)

 8

 
14 (range 0-14, 0 = wildcard)

 4

Network Selection Table

Number of entries

Digits for each pattern

 

 4 (0-3)

 8 (* = wild card; at least one * required; all *s must be at end and contiguous.)

Special Services Selection Table

Number of entries

Digits for each pattern

Digits to delete

 


 8 (0-7)

 4

 
4 (range 0-4)

Call-by-Call Services Table

Number of entries

Number of patterns for each entry

Digits for each pattern

Digits to delete




 10 (0-9)

 10


 8


 8 (range 0-8)

T1-specific

T1 Dial Plan Routing Table

Number of entries

Expected Digits

Digits to delete

Digits to add

 



  24 (1-24)

 3 (range 1-3)

 4 (range 0-4)

 4 (range 0-4)

Factory Settings

System-wide

Primary Clock

Clock Synchronization Source

Clock

 

 

 

First port that is in service on an 800 NI-BRI module or first 100D module in service in control unit

Loop (not definable by System Manager)

 

Active

100D Module

Type of Facility

Framing Format

Line Coding

Signaling

Line Compensation

 

 T1

 D4 compatible

 AMI-ZCS

 Robbed-Bit Signaling (RBS)

 1 (range 1-5)

 1 = 0.6 dB loss

 2 = 1.2 dB loss

 3 = 1.8 dB loss

 4 = 2.4 dB loss

 5 = 3.0 dB loss

Type of CSU equipment Foreign Exchange

PRI

Telephone number assigned to PRI line

B-channels assigned to group

PRI lines assigned to B-channel groups

Type of network service for each B-channel group

 

 0 digits


 None


 None


 None

Copy telephone number to send from telephone number assigned

Telephone number to send to network for outgoing PRI calls

Test trunk telephone number for each 100D module

 Do Not Copy




 0 digits


 

 None

Call-by-Call Services Table

Patterns

Call type

Service

Digits to delete

 


Blank

Both (Voice and Data)

Blank

0

Timer/counter thresholds for each 100D module

T200 Timer

T203 Timer

N200 Counter

N201 Counter

K Counter

T303 Timer

T305 Timer

T308 Timer

T309 Timer

T310 Timer

T313 Timer

T316 Timer

 


 1 second (range 1,000-3,000 ms)

 30 seconds (range 1-60)

 3 transmissions (range 1-5)

 260 octets (range 16-260)

 7 frames (range 1-15)

 4 seconds (range 4-12)

 4 seconds (range 4-30)

 4 seconds (range 4-12)

 90 seconds (range 30-120)

 60 seconds (range 2-120)

 4 seconds (range 4-60)

 120 seconds (range 30-120)

Link layer address or TEI assigned  0 (range 0-63)

PRI Dial Plan Routing Table

Service value

Digits for each pattern

Digits in Called Party Number

Digits to add

 

 


 Empty


 Blank


 0

T1 Dial Plan Routing Table

Expected Digits

Digits to delete

Digits to add

 Blank


 Blank

 0

 Blank

Tandem PRI Trunks1

B-channels assigned to group

Type of network service for the B-channel group

Copy telephone number to send from telephone number assigned



 All


 ETN (Electronic Tandem Network)



 Copy


1 

 

When the switch type is set to LEGEND-Ntwk or LEGEND-PBX, these settings are made automatically and cannot be changed unless the switch type is changed. You can add or remove B-channels from the assigned B-channel group.


Topics
  Description
 
  Called Party Nunber (CdPN)
Calling Party Number (CPN)
Lines / Trunks
PRI
T1
DS1 Facility Options
Type of Service
Framing Format
Line Coding
Channel Service Unit
  Line Compensation
Signaling Mode
Tandem PRI Trunks
Tandem PRI Trunk Programming
PRI Programnming Options
PRI Programnming Options - PRI Telephone Number
PRI Programnming Options - Network Services Supported
PRI Programnming Options - Copy Telephone Number to Send
PRI Programnming Options - Telephone Number to Send
PRI Programnming Options - Test Telephone Number
  PRI Programnming Options - Timers and Counters
PRI Programnming Options - Terminal Equipment Identifier (TEI)
PRI Call Processing
Incoming Calls
Outgoing Calls
Network Selection Table
Call-by-Call Services Table
Station Identification - Automatic Number Identification
T1 Programming Options
T1 Programming Options - T1 Tie Trunk Connections
T1 Programming Options - T1 Routing by Dial Plan
System-wide Programming Options - Clock Synchronization
System-wide Programming Options - Clock Switching
  At a Glance
  Considerations & Constraints
 
  Incoming Calls
Outgoing Calls
  Mode Differences
Feature Interactions