Manuali utente per EFJohnson 3000 SERIES

Sommario

• TABLE OF CONTENTS

  5
• SECTION 1 INTRODUCTION

  13
  • 1.1 SCOPE OF MANUAL

    13
  • 1.2 DEFINITIONS

    13
    • 1.2.1 TRUNKED SYSTEM

      13
    • 1.2.2 LTR TRUNKED SYSTEM

      13
    • 1.2.3 MULTI-NET TRUNKED SYSTEM

      13
    • 1.2.4 CONVENTIONAL SYSTEM

      13
    • 1.2.5 3000 SERIES SWITCH

      13
    • 1.2.6 CALL PROCESSOR

      13
    • 1.2.7 SYSTEM and SUBSCRIBER MANAGER

      13
    • 1.2.8 REPEATER SITE

      13
    • 1.2.9 HOME REPEATER CHANNEL

      13
    • 1.2.10 STATUS REPEATER CHANNEL

      14
    • 1.2.11 MONITOR REPEATER CHANNEL

      14
    • 1.2.12 TELEPHONE INTERCONNECT AND DATA TRANSMISSION

      14
    • 1.2.13 PUBLIC SWITCHED TELEPHONE NETWORK (PSTN)

      14
    • 1.2.14 PRIVATE AUTOMATIC BRANCH EXCHANGE (PABX)

      14
• SECTION 2 3000 SERIES SWITCH

  15
  • 2.1 INTRODUCTION

    15
  • 2.2 ELEMENTS OF THE SWITCH

    16
  • 2.3 SWITCH MODULES (ELEMENTS)

    16
• SECTION 3 ARCHITECTURE

  21
  • 3.1 INTRODUCTION

    21
  • 3.2 SWITCH INTERFACES

    21
  • 3.3 BUS STRUCTURE

    22
    • 3.3.1 DATA BUS

      22
    • 3.3.2 CONTROL BUS

      23
    • 3.3.3 VOICE BUS

      24
• SECTION 4 SYSTEM RACK

  27
  • 4.1 TWO SHELF 3000 SERIES SWITCH

    27
    • 4.1.1 POWER CONSUMPTION

      27
    • 4.1.2 EQUIPMENT REQUIRED

      27
    • 4.1.3 Two SHELF POWER SUPPLY

      28
    • 4.1.4 POWER SUPPLY REDUNDANT PLATE

      28
    • 4.1.5 VOLTAGE ADJUSTMENTS

      28
    • 4.1.6 REDUNDANT SUPPLY ADJUSTMENTS

      28
    • 4.1.7 VERIFY FAN AIR FLOW DIRECTION

      28
    • 4.1.8 VERIFY VOLTAGES ON POWER DISTRIBUTION CABLE

      29
    • 4.1.9 SYSTEM TEST PROCEDURE

      29
    • 4.1.10 FINAL CONFIGURATION VERIFICATION

      31
  • 4.2 FOUR SHELF 3000 SERIES SWITCH

    33
    • 4.2.1 POWER CONSUMPTION

      33
    • 4.2.2 EQUIPMENT REQUIRED

      33
    • 4.2.3 4-SHELF POWER SUPPLY

      33
    • 4.2.4 POWER SUPPLY REDUNDANT PLATE

      33
    • 4.2.5 VOLTAGE ADJUSTMENTS

      34
    • 4.2.6 REDUNDANT SUPPLY ADJUSTMENTS

      34
    • 4.2.7 VERIFY FAN AIR FLOW DIRECTION

      34
    • 4.2.8 VERIFY VOLTAGES ON POWER DISTRIBUTION CABLE

      34
    • 4.2.9 SYSTEM TEST PROCEDURE

      35
    • 4.2.10 FINAL CONFIGURATION VERIFICATION

      37
  • 4.3 SIX SHELF 3000 SERIES SWITCH

    39
    • 4.3.1 POWER CONSUMPTION

      39
    • 4.3.2 EQUIPMENT REQUIRED

      39
    • 4.3.3 VERIFY RESISTANCE OF BUS BAR AND POWER SUPPLY LINES

      40
    • 4.3.4 VERIFY COOLING FAN AIR FLOW DIRECTION

      40
    • 4.3.5 VERIFY VOLTAGES ON POWER DISTRIBUTION CABLE

      40
    • 4.3.6 SYSTEM TEST PROCEDURE

      40
    • 4.3.7 FINAL CONFIGURATION VERIFICATION

      43
  • 4.4 EIGHT SHELF 3000 SERIES SWITCH

    46
    • 4.4.1 POWER CONSUMPTION

      46
    • 4.4.2 EQUIPMENT REQUIRED

      46
    • 4.4.3 VERIFY RESISTANCE OF BUS BAR AND POWER SUPPLY LINES

      46
    • 4.4.4 VERIFY COOLING FAN AIR FLOW DIRECTION

      47
    • 4.4.5 VERIFY VOLTAGES ON POWER DISTRIBUTION CABLE

      47
    • 4.4.6 SYSTEM TEST PROCEDURE

      47
    • 4.4.7 FINAL CONFIGURATION VERIFICATION

      49
• SECTION 5 CALL PROCESSOR

  55
  • 5.1 INTRODUCTION

    55
  • 5.2 DATA BUSES

    55
  • 5.3 CALL PROCESSOR CONTROL

    56
    • 5.3.1 System Configuration

      56
    • 5.3.2 Manual Device Control

      56
    • 5.3.3 Subscriber Management

      56
    • 5.3.4 Activity Log Utilities

      56
    • 5.3.5 Call Completion

      56
    • 5.3.6 Keyboard Lock

      57
    • 5.3.7 Log Out/Log In

      57
  • 5.4 ALARM CONTROL

    57
  • 5.5 SYSTEM ANALYZER

    57
  • 5.6 CALL PROCESSING

    57
• SECTION 6 NETWORK INTERFACE MODULE (NetNIM)

  59
  • 6.1 DESCRIPTION

    59
  • 6.2 OPERATION

    59
    • 6.2.1 LEDs

      60
  • 6.3 SETUP PROCEDURE

    60
    • 6.3.1 JUMPERS

      60
    • 6.3.2 SWITCHES

      60
  • 6.4 ALIGNMENT SPECIFICATIONS

    60
    • 6.4.1 DETECTOR SETTING

      61
• SECTION 7 BASIC BOARD MODULE (BBM)

  63
  • 7.1 DESCRIPTION

    63
    • 7.1.1 MAIN AUDIO

      63
    • 7.1.2 SECONDARY COMMUNICATION

      63
    • 7.1.3 INTERNAL COMMUNICATION

      63
  • 7.2 BBM SETUP PROCEDURE

    65
    • 7.2.1 SWITCH SETTINGS

      65
    • 7.2.2 JUMPER PLACEMENT

      65
    • 7.2.3 BBM BACKPLANE EXTERNAL CONNECTIONS

      65
  • 7.3 BBM ALIGNMENT PROCEDURES

    66
    • 7.3.1 INTRODUCTION

      66
    • 7.3.2 ALIGNMENT

      66
  • 7.4 TEST TASKS

    67
    • 7.4.1 SYSTEM SWITCH EQUALS "1"

      67
    • 7.4.2 SYSTEM SWITCH EQUALS "2"

      67
    • 7.4.3 SYSTEM SWITCH EQUALS "3"

      67
    • 7.4.4 SYSTEM SWITCH EQUALS "4"

      67
    • 7.4.5 SYSTEM SWITCH EQUALS "5"

      67
    • 7.4.6 SYSTEM SWITCH EQUALS "6"

      67
    • 7.4.7 SYSTEM SWITCH EQUALS "7"

      68
    • 7.4.8 SYSTEM SWITCH EQUALS "8"

      68
    • 7.4.9 SYSTEM SWITCH EQUALS "9"

      68
  • 7.5 TROUBLESHOOTING

    68
    • 7.5.1 TEST "1"

      68
    • 7.5.2 TEST "2"

      69
    • 7.5.3 TEST "3"

      69
    • 7.5.4 TEST "4"

      69
    • 7.5.5 TEST "5"

      70
    • 7.5.6 TEST "6"

      71
    • 7.5.7 TEST "7"

      71
    • 7.5.8 TEST "8"

      71
    • 7.5.9 TEST "9"

      71
  • 7.6 DS1 DISPLAY DEFINITIONS

    71
• SECTION 8 CHANNEL INTERFACE MODULE (CIM)

  77
  • 8.1 DESCRIPTION

    77
    • 8.1.1 REPEATER SIGNALING

      77
    • 8.1.2 REPEATER CONTROL

      77
    • 8.1.3 VOICE CONNECTION

      77
    • 8.1.4 INTERNAL COMMUNICATION

      77
  • 8.2 CIM SETUP PROCEDURE

    77
    • 8.2.1 SWITCH SETTINGS

      77
    • 8.2.2 JUMPER PLACEMENT

      78
    • 8.2.3 CIM BACKPLANE EXTERNAL CONTACTS

      78
    • 8.2.4 EXTERNAL CONNECTIONS

      80
  • 8.3 CIM ALIGNMENT SPECIFICATIONS

    80
    • 8.3.1 PRE-ALIGNMENT

      80
    • 8.3.2 CIM ALIGNMENT PROCEDURE

      80
  • 8.4 CIM AUDIO SUMMATION PERSONALITY CARD

    82
    • 8.4.1 INTERNAL CONNECTIONS

      82
    • 8.4.2 EXTERNAL CONNECTIONS

      82
    • 8.4.3 ALIGNMENT PROCEDURE

      82
• SECTION 9 CONVENTIONAL CHANNEL MODULE (CCM)

  85
  • 9.1 DESCRIPTION

    85
    • 9.1.1 REPEATER SIGNALING

      85
    • 9.1.2 REPEATER CONTROL

      85
    • 9.1.3 VOICE CONNECTION

      85
    • 9.1.4 INTERNAL COMMUNICATION

      85
  • 9.2 CCM SETUP PROCEDURE

    85
    • 9.2.1 CCM SWITCH SETTINGS

      85
    • 9.2.2 AFSK COMMUNICATION ON THE MAIN LINES

      85
    • 9.2.3 CCM JUMPER PLACEMENT

      85
    • 9.2.4 CCM BACKPLANE EXTERNAL CONTACTS

      86
  • 9.3 CCM ALIGNMENT SPECIFICATIONS

    86
    • 9.3.1 PRE-ALIGNMENT

      86
    • 9.3.2 CCM ALIGNMENT PROCEDURE

      86
• SECTION 10 DISPATCH CHANNEL MODULE (DCM)

  89
  • 10.1 DESCRIPTION

    89
    • 10.1.1 REPEATER SIGNALING

      89
    • 10.1.2 REPEATER CONTROL

      89
    • 10.1.3 VOICE CONNECTION

      89
    • 10.1.4 INTERNAL COMMUNICATION

      89
  • 10.2 DCM SETUP PROCEDURE

    89
    • 10.2.1 DCM SWITCH SETTINGS

      89
    • 10.2.2 AFSK COMMUNICATION ON THE MAIN LINES

      89
    • 10.2.3 DCM JUMPER PLACEMENT

      89
    • 10.2.4 DCM BACKPLANE EXTERNAL CONTACTS

      90
  • 10.3 DCM ALIGNMENT SPECIFICATIONS

    90
    • 10.3.1 PRE-ALIGNMENT

      90
    • 10.3.2 DCM ALIGNMENT PROCEDURE

      90
• SECTION 11 DISPATCH INTERFACE MODULE (DIM)

  93
  • 11.1 DESCRIPTION

    93
  • 11.2 DIM SETUP PROCEDURE

    93
    • 11.2.1 SWITCH SETTINGS

      93
    • 11.2.2 DIM JUMPER PLACEMENT

      93
    • 11.2.3 E-LEAD SELECTION

      94
    • 11.2.4 DIM BACKPLANE EXTERNAL CONTACTS

      94
  • 11.3 DIM ALIGNMENT SPECIFICATION

    94
    • 11.3.1 PRE-ALIGNMENT

      94
    • 11.3.2 PRE-ALIGNMENT WITH TONE REMOTE PERSONALITY CARD

      94
  • 11.4 ALIGNMENT

    95
  • 11.5 TONE REMOTE DTMF OPERATION

    96
• SECTION 12 INTELLIGENT DISPATCH MODULE (IDM)

  101
  • 12.1 DESCRIPTION

    101
  • 12.2 IDM SETUP PROCEDURE

    102
    • 12.2.1 SWITCH SETTINGS

      102
    • 12.2.2 IDM JUMPER PLACEMENT

      102
    • 12.2.3 IDM BACKPLANE EXTERNAL CONTACTS

      102
  • 12.3 IDM ALIGNMENT SPECIFICATION

    104
    • 12.3.1 PRE-ALIGNMENT

      104
  • 12.4 ALIGNMENT

    104
  • 12.5 PCM SUMMATION PERSONALITY CARD

    105
    • 12.5.1 INTERNAL CONNECTIONS

      105
    • 12.5.2 EXTERNAL CONNECTIONS

      105
    • 12.5.3 ALIGNMENT PROCEDURE

      105
• SECTION 13 SYSTEM NETWORK MODULE (SNM)

  107
  • 13.1 DESCRIPTION

    107
  • 13.2 SNM SETUP PROCEDURE

    108
    • 13.2.1 SNM SWITCH SETTINGS

      108
    • 13.2.2 AFSK COMMUNICATION ON THE MAIN LINES

      108
    • 13.2.3 SNM JUMPER PLACEMENT

      108
    • 13.2.4 SNM BACKPLANE EXTERNAL CONTACTS

      108
  • 13.3 SNM ALIGNMENT SPECIFICATIONS

    108
    • 13.3.1 PRE-ALIGNMENT

      108
    • 13.3.2 SNM ALIGNMENT PROCEDURE

      108
• SECTION 14 TELEPHONE INTERFACE MODULE (TIM)

  111
  • 14.1 DESCRIPTION

    111
    • 14.1.1 SUPERVISION

      112
    • 14.1.2 SIGNALING

      112
    • 14.1.3 CALL SUPERVISION

      112
    • 14.1.4 INTRA-TERMINAL COMMUNICATION

      112
    • 14.1.5 TELEPHONE LINE STYLES

      113
    • 14.1.6 AUDIO PROCESSING

      113
    • 14.1.7 RECEIVE AUDIO

      113
    • 14.1.8 TRANSMIT AUDIO

      114
  • 14.2 4-WIRE E&M INTERFACE DESCRIPTION

    114
    • 14.2.1 AUDIO

      114
    • 14.2.2 E&M LEADS

      114
    • 14.2.3 8-POSITION DIP SWITCH S201

      115
    • 14.2.4 TYPE I AND V

      116
    • 14.2.5 TYPE II AND III

      116
    • 14.2.6 TYPE IV

      116
    • 14.2.7 TYPE II TRUNK-TO-TRUNK

      116
    • 14.2.8 TYPE V TRUNK-TO-TRUNK

      117
  • 14.3 LED STATUS FOR E&M LEADS

    117
    • 14.3.1 TELCO SIDE STATUS

      117
    • 14.3.2 E&M LOGIC STATUS

      117
  • 14.4 E&M LEAD CIRCUIT THEORY OF OPERATION

    118
    • 14.4.1 E&M INTERFACE

      118
    • 14.4.2 SIGNAL CONDITIONING

      118
  • 14.5 TIM SETUP PROCEDURE

    121
    • 14.5.1 TIM JUMPER PLACEMENT

      121
    • 14.5.2 MAIN BOARD SWITCH SETTINGS

      121
  • 14.6 2WY SETUP AND ALIGNMENT PROCEDURES (-670)

    121
    • 14.6.1 2WY JUMPER SETUP

      121
    • 14.6.2 2WY PRE-ALIGNMENT PROCEDURES

      121
  • 14.7 2-WAY TIM ALIGNMENT PROCEDURES (-670)

    123
    • 14.7.1 MAIN RECEIVE

      123
    • 14.7.2 DIAL TONE DETECTOR

      123
    • 14.7.3 OUTPUT HYBRID ADJUST

      124
  • 14.8 DID SETUP AND ALIGNMENT (-660)

    125
    • 14.8.1 DID PERSONALITY CARD JUMPER SETTINGS

      125
    • 14.8.2 PRE-ALIGNMENT

      125
  • 14.9 DID OPERATIONAL ALIGNMENT PROCEDURES (-660)

    126
  • 14.10 E&M SETUP AND ALIGNMENT (-680)

    127
    • 14.10.1 EQUIPMENT REQUIRED

      127
    • 14.10.2 TRANSMIT ALIGNMENT

      127
    • 14.10.3 RECEIVER ALIGNMENT

      128
    • 14.10.4 4-WIRE E&M DIAL TONE DETECTOR RECEIVE ALIGNMENT

      128
  • 14.11 TERMSET MODULES

    133
    • 14.11.1 EQUIPMENT SETUP

      133
    • 14.11.2 INITIALIZING THE TELLABS CARDS

      133
    • 14.11.3 SWITCH SETTINGS ON 6132A (DID APPLICATIONS)

      134
    • 14.11.4 XEL TERMSET RACK

      135
    • 14.11.5 CONNECTION TO THE PHONE LINES

      136
    • 14.11.6 FINAL PATH INSPECTION

      137
  • 14.12 BACKGROUND INFORMATION

    137
    • 14.12.1 STANDARD SIGNAL

      137
    • 14.12.2 OUTLINED OBJECTIVE

      137
    • 14.12.3 THE ORDER OF THINGS

      137
  • 14.13 TUNING A DOD OR DID 2-WIRE INTERFACE TO THE 4-WIRE E&M BOARD.

    138
  • 14.14 BALANCING TO THE CENTRAL OFFICE

    140
    • 14.14.1 INTRODUCTION

      140
    • 14.14.2 STATISTICS

      140
    • 14.14.3 ADDING CAPACITANCE TO THE TERMSET

      140
    • 14.14.4 RURAL AREAS

      140
    • 14.14.5 URBAN AREAS

      140
  • 14.15 FCC USER INSTRUCTIONS AND CUSTOMER INFORMATION

    141
• SECTION 15 VOTER DIAGNOSTICS MODULE (VDM)

  143
  • 15.1 DESCRIPTION

    143
  • 15.2 VDM SETUP PROCEDURE

    143
    • 15.2.1 SWITCH SETTINGS

      143
    • 15.2.2 JUMPER PLACEMENT

      144
    • 15.2.3 VDM BACKPLANE EXTERNAL CONTACTS

      144
  • 15.3 VDM ALIGNMENT SPECIFICATIONS

    144
• SECTION 16 POWER TERMINATION MODULE (PTM)

  147
  • 16.1 DESCRIPTION

    147
  • 16.2 SETUP PROCEDURE

    147
• SECTION 17 LOGGING ENCODER MODULE (LEM)

  149
  • 17.1 DESCRIPTION

    149
  • 17.2 LEM SETUP PROCEDURE

    150
    • 17.2.1 LEM SWITCH SETTINGS

      150
    • 17.2.2 LEM JUMPER PLACEMENT

      150
    • 17.2.3 LEM BACKPLANE EXTERNAL CONTACTS

      150
  • 17.3 LEM ALIGNMENT SPECIFICATIONS

    150
    • 17.3.1 PRE-ALIGNMENT

      150
    • 17.3.2 LEM ALIGNMENT PROCEDURE

      150
• SECTION 18 VOICE TONE MODULE (VTM)

  153
  • 18.1 DESCRIPTION

    153
  • 18.2 SETUP PROCEDURE

    153
    • 18.2.1 VTM JUMPER PLACEMENT

      153
    • 18.2.2 VTM SWITCH SETTINGS

      153
  • 18.3 ALIGNMENT SPECIFICATIONS

    153
• SECTION 19 WIDE AREA MODULE (WAM)

  157
  • 19.1 DESCRIPTION

    157
  • 19.2 WAM SETUP PROCEDURE

    158
    • 19.2.1 WAM SWITCH SETTINGS

      158
    • 19.2.2 WAM JUMPER PLACEMENT

      158
    • 19.2.3 WAM BACKPLANE EXTERNAL CONTACTS

      158
  • 19.3 WAM ALIGNMENT SPECIFICATIONS

    158
    • 19.3.1 PRE-ALIGNMENT

      158
    • 19.3.2 WAM ALIGNMENT PROCEDURE

      158
  • 19.4 WAM E&M-LEAD CONNECTIONS

    160
    • 19.4.1 ONE LOCATION

      161
    • 19.4.2 TWO LOCATIONS

      161
    • 19.4.3 THREE LOCATIONS

      161
  • 19.5 M-LEAD SPLITTER BOX

    161
    • 19.5.1 GENERAL

      161
    • 19.5.2 INSTaLLATION

      161
  • 19.6 WAM AUDIO CONNECTIONS

    162
• SECTION 20 MULTI-NET CONSOLE MODULE (MCM)

  165
  • 20.1 DESCRIPTION

    165
  • 20.2 MCM SETUP PROCEDURE

    166
    • 20.2.1 SWITCH SETTINGS

      166
    • 20.2.2 MCM JUMPER PLACEMENT

      166
    • 20.2.3 MCM BACKPLANE EXTERNAL CONTACTS

      166
  • 20.3 MCM ALIGNMENT SPECIFICATION

    166
    • 20.3.1 PRE-ALIGNMENT

      166
  • 20.4 ALIGNMENT

    167
  • 20.5 PCM SUMMATION PERSONALITY CARD

    168
    • 20.5.1 INTERNAL CONNECTIONS

      168
    • 20.5.2 EXTERNAL CONNECTIONS

      168
    • 20.5.3 ALIGNMENT PROCEDURE

      168
• SECTION 21 CONVENTIONAL PATCH MODULE (CPM)

  171
  • 21.1 DESCRIPTION

    171
  • 21.2 PCM SETUP PROCEDURE

    171
    • 21.2.1 SWITCH SETTINGS

      171
    • 21.2.2 CPM JUMPER PLACEMENT

      171
    • 21.2.3 E-LEAD SELECTION

      172
    • 21.2.4 CPM BACKPLANE EXTERNAL CONTACTS

      172
  • 21.3 CPM ALIGNMENT SPECIFICATION

    172
    • 21.3.1 PRE-ALIGNMENT

      172
    • 21.3.2 ALIGNMENT

      172
• SECTION 22 POWER SUPPLY

  175
  • 22.1 INTRODUCTION

    175
  • 22.2 POWER CONSUMPTION

    175
• SECTION 23 BACKPLANE

  181
  • 23.1 DESCRIPTION

    181
  • 23.2 BACKPLANE SETUP PROCEDURE

    181
    • 23.2.1 SHELF ADDRESS SETTINGS

      181
    • 23.2.2 TERMINATION SETTINGS

      181
    • 23.2.3 JUMPER DEFINITIONS AND SETTINGS

      181
  • 23.3 STANDARD SHELF I/O CONNECTIONS

    182
  • 23.4 CIM SHELF I/O CONNECTIONS

    183
    • 23.4.1 PRIMARY PCM

      183
    • 23.4.2 SECONDARY PCM

      183
  • 23.5 NetNIM SHELF WITH CIM/CCMs

    184
  • 23.6 NetNIM SHELF WITHOUT CIM/CCMs

    185
• SECTION 24 INTERCOM

  195
  • 24.1 DESCRIPTION

    195
  • 24.2 INSTALLATION

    195
    • 24.2.1 EQUIPMENT REQUIRED

      195
    • 24.2.2 INSTALLATION PROCEDURE

      195
• APPENDIX A ERROR MESSAGES

  197
  • A.1 IDB ERROR MESSAGES TO MESSAGE ACCOUNTING BUS FROM MODULES

    197
  • A.2 MAB ERROR MESSAGES FROM SYSTEM MANAGEMENT MODULE

    198
• APPENDIX B CALL SEQUENCES

  201
  • B.1 GROUP CALL

    201
    • B.1.1 MOBILE TO MOBILE ON SAME SITE

      201
    • B.1.2 MOBILE TO MOBILE WITH DIM MONITORING

      201
  • B.2 DISPATCH CONSOLE (DC) TO MOBILE GROUP CALL

    201
  • B.3 MOBILE GROUP CALL TO DISPATCH CONSOLE

    201
  • B.4 MOBILE TO UNIQUE ID

    202
  • B.5 MOBILE TO UNIQUE ID FOR A MOBILE OUTSIDE SWITCH

    203
  • B.6 MOBILE TO DIRECTED GROUP CALL (DTMF ENTRY WITHIN SWITCH)

    203
  • B.7 MOBILE TO DIRECTED GROUP CALL (DTMF ENTRY OUTSIDE THE SWITCH)

    204
  • B.8 MOBILE ORIGINATED TELEPHONE CALL

    205
  • B.9 LANDSIDE (TIM) ORIGINATE TO MOBILE WITHIN SWITCH USING A DID LINE

    206
  • B.10 LANDSIDE (TIM) ORIGINATE TO MOBILE WITHIN SWITCH USING A 2WY LINE

    206
  • B.11 TIM ORIGINATE TO MOBILE OUTSIDE SWITCH USING A DID LINE

    207
  • B.12 LANDSIDE ORIGINATE TO MOBILE OUTSIDE SWITCH USING A 2WY LINE

    207