Specifications
Table Of Contents
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- MAIN MENU
- MASTER INDEX
- GLOSSARY
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- DEFINITY ECS and System 75 and System 85 Terminals and Adjuncts Reference
- Contents
- 1 Introduction
- 2 General Information
- 3 Exposed Port Protection
- 4 Adjunct Power
- 5 Administration
- 6 Voice Terminal Features
- 7 The 6400 Series Telephones
- The 6402 and 6402D Telephones
- The 6408+ and 6408D+ Telephones
- The 6416D+ and 6416D+M Telephones
- All 6416D+ and 6416D+M Telephones
- Only the Modular 6416D+M Telephone
- Applications
- Physical Features
- Wiring Information
- Appropriate Circuit Packs and Distance Limitations
- Power Requirements
- Administration
- Power Failure Operation
- FCC Registration
- UL and CSA Approval
- Hearing Aid Compatible
- 6416D+ and 6416D+M Telephones and Equipment PECs and Comcodes
- Adjuncts
- Additional Documents
- The 6424D+ and 6424D+M Telephone
- All 6424D+ and 6424D+M Telephones
- Only the Modular 6424D+M
- Applications
- Physical Features
- Wiring Information
- Appropriate Circuit Packs and Distance Limitations
- Power Requirements
- Power Failure Operation
- FCC Registration
- UL and CSA Approval
- Hearing Aid Compatible
- 6424D+ and 6424D+M Equipment PECs and Comcodes
- Adjuncts
- Additional Documents
- 8 The 7100 Series Voice Terminals
- 9 The 7200 Series Voice Terminals
- 10 The 7300 Series Voice Terminals
- 11 The 7400 Series Voice Terminals
- The 7401D and 7401 Plus Voice Terminals
- Applications
- Special Operational Characteristics
- Physical Features
- Distance Limitations
- Power Requirements
- Switch Administration
- Power Failure Operation
- FCC Registration
- UL and CSA Approval
- Hearing Aid Compatible
- 7401D Equipment PECs and Comcodes
- 7401 Plus Equipment with PECs and Comcodes
- Adjuncts
- Additional Documents
- The 7402 Plus Voice Terminal
- The 7403D Voice Terminal
- The 7404D Voice Terminal
- The 7405D Voice Terminal
- The 7406D, 7406BIS, and 7406 Plus Voice Terminals
- The 7407D, Enhanced 7407D, and 7407 Plus Voice Terminals
- Applications
- Special Operational Characteristics
- Physical Features
- Distance Limitations
- Power Requirements
- Switch Administration
- Power Failure Operation
- FCC Registration
- UL and CSA Approval
- Hearing Aid Compatible
- 7407D/Enhanced 7407D Equipment PECs and Comcodes
- 7407 Plus Equipment PECs and Comcodes
- Adjuncts
- Additional Documents
- The 7410D and 7410 Plus Voice Terminals
- The 7434D Voice Terminal
- The 7444 Voice Terminal
- The 7401D and 7401 Plus Voice Terminals
- 12 The 8400 Series Voice Terminals
- The 8403 Voice Terminal
- The 8405B, 8405B Plus, 8405D, and 8405D Plus Voice Terminals
- The 8410 Voice Terminal
- The 8411 Voice Terminal
- The 8434 and 8434DX Voice Terminals
- 13 CALLMASTER Voice Terminals
- The CALLMASTER, CALLMASTER II, CALLMASTER III, CALLMASTER IV, CALLMASTER V, and CALLMASTER VI Voi...
- Applications
- Special Operational Characteristics
- Physical Description
- Wiring Information on the CALLMASTER IV
- Wiring Note for the CALLMASTER VI
- Distance Limitations
- Power Requirements
- Switch Administration
- Power Failure Operation
- FCC Registration
- CALLMASTER Equipment PECs and Comcodes
- Adjuncts
- Additional Documents
- The CALLMASTER, CALLMASTER II, CALLMASTER III, CALLMASTER IV, CALLMASTER V, and CALLMASTER VI Voi...
- 14 The 500 and 2500 Series Telephones
- The 500 Series Telephone
- The 2500 Series Telephones
- The 2500 DMGC Telephone
- The 2500 YMGK Telephone
- The 2500 MMGL and 2500 YMGL, 2500 MMGM and 2500 YMGM, and 2554 MMGM and 2554 YMGM Telephones
- The 2500 MMGN and 2500 YMGP and 2554 MMGN and 2554 YMGP Telephones
- 15 The 6200 Series Telephones
- 16 The 8100 Series Telephones
- The 8101 and 8101M Telephones
- The 8102 and 8102M Telephones
- The 8110 and 8110M Telephones
- 17 ISDN Voice Terminals
- The ISDN 7505 Modular Terminal
- The ISDN 7506 Voice Terminal
- The ISDN 7507 Display Terminal
- The ISDN 8503 Voice Terminal
- The ISDN 8510 Voice/Data Terminal
- The ISDN 8520T Voice/Data Terminal
- 18 Cordless and Wireless Telephones
- The MDC 9000 Cordless Telephone
- The MDW 9000 Wireless Telephone
- The MDW 9031DCP Wireless Pocket Phone
- 19 Other Voice Terminals
- 20 Adjuncts
- Call Coverage Modules
- Digital Display Modules
- Function Key Modules
- The 801A Expansion Module
- The XM24 Expansion Module
- The 100A Tip/Ring Module
- Headset Adapters
- The Z34A Message Waiting Indicator
- The 4A, S101A, and S102A Speakerphones
- The S201A and S202A Speakerphones
- The S203A Speakerphone
- The 107-Type Loudspeaker
- The 7404D (Voice Terminal) Messaging Cartridge
- The 2870A1 Automatic Dialer
- 21 Data Modules
- The 7400A Data Module
- The 7400B and 7400B Plus Data Module
- The 7400D Low-Speed Asynchronous Data Module
- The 8400B Plus Data Module
- The 7500B Data Module
- The ISDN Asynchronous Data Module (ADM)
- The Digital Terminal Data Module (DTDM)
- The Z702AL1 Data Service Unit (DSU)
- The 703A Data Service Unit (DSU)
- The DEFINITY High Speed Link
- The Processor Data Module (PDM)
- The Trunk Data Module (TDM)
- The Modular Processor Data Module (MPDM)
- The Modular Trunk Data Module (MTDM)
- The 3270 Data Module
- The Asynchronous Data Unit (ADU)
- The Multiple Asynchronous Data Unit (MADU)
- DCIU Interface Units
- The 2500-Series DSU
- 22 PC Platforms (PC/PBX and PC/ISDN) and Application Software
- 23 Blank Templates for Model Design
The 703A Data Service Unit (DSU)
Issue 11 December 1999
21-45
The 703A Data Service Unit (DSU)
Figure 21-14. The 703A Data Service Unit
The 703A DSU is used with the 7406D voice terminal to provide asynchronous
data communications through the switch. The DSU replaces the desk stand under
the 7406D voice terminal and allows a data terminal (such as a 610 BCT) to be
connected to the 7406D and data calls to be made to and from the switch. (See
Figure 21-15.)