Att DEFINITY 7200 series Bedienungsanleitung Seite 173
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LOCAL AREA NETWORK CONNECTIONS 8-19
_ ______________________________________________________________________________________
_ ______________________________________________________________________________________
_ ______________________________________________________________________________________
LANLAN
D
C
P
D
S
1
S75/S85/G1/G2
D
C
P
D
S
1
S75/S85/G1/G2
T1
MPDMMPDM
BRIDGE
OR
ROUTER
BRIDGE
OR
ROUTER
Figure 8-10. LAN-to-LAN Connections Through the Switch
Table 8-5. LAN-to-LAN Communications Packages
_ _______________________________________________________
Type of Operating Communications
LAN System Package
_ _______________________________________________________
_ _______________________________________________________
StarLAN, StarGROUP X.25 Router
Token Ring, or SNA Gateway
Ethernet
_ _______________________________________________________
StarLAN or Novell Gateway Communications
Token Ring
_ _______________________________________________________
Token Ring Any Microcom MLB-6000 Bridge
Cisco Router
VITALINK TransRING Bridge
_ _______________________________________________________
Ethernet Any Microcom MLB-6000 Bridge
Cisco Router
VITALINK TransRING Bridge
_ _______________________________________________________
a Network Access Unit (NAU) interface; on the communications system side, is the X.25 circuit card, an
MPDM, and a DCP port. A System 75/G1 permanent switched call or a System 85/G2 dedicated switched
connection is used to connect the MPDMs.
The SNA Gateway
The SNA Gateway enables communication between StarGROUP nodes and a front end processor (FEP) to
an SNA (System Network Architecture) host. For communication between a remote-StarGROUP node and
the SNA host, the SNA Gateway can be used in conjunction with the X.25 router. (See figure 8-12.)
The SNA Gateway package consists of a PC card, gateway software, and a 3270 emulation program. The
PC card and gateway software are installed on the SNA gateway node; the 3270 emulation program runs on
the PC that seeks to access the SNA node. The gateway can maintain communications between the SNA
host and up to 32 LAN nodes at speeds of up 19.2 kbps.
- Network and Data Connectivity 1
- CONTENTS 10
- CONTENTS xi 11
- ACCUNET Packet Service 8-22 12
- CONTENTS xiii 13
- CONTENTS xv 15
- ABOUT THIS DOCUMENT xix 19
- ABOUT THIS DOCUMENT 20
- INTRODUCTION TO CONNECTIVITY 22
- TRANSMISSION TYPES 23
- ANALOG TRANSMISSION 23
- DIGITAL TRANSMISSION 23
- 1-4 TRANSMISSION TYPES 24
- ANALOG VS. DIGITAL 25
- TRANSMISSION STATES 27
- VOICE TRANSMISSION 27
- Entering the Switch 27
- 1-8 TRANSMISSION STATES 28
- Exiting the Switch 29
- DIMENSION S75/G1 S85/G2 30
- DATA TRANSMISSION 31
- Protocol Layers 31
- 1-12 TRANSMISSION STATES 32
- Protocols Used 33
- Protocol States 34
- Connectivity Rules 35
- MULTIPLEXED COMMUNICATION 37
- TYPES OF MULTIPLEXING 37
- Time-Division Multiplexing 37
- Statistical Multiplexing 38
- Line Coding 39
- Signal Inversion 41
- (Continued) 42
- Signaling 45
- Multiplexing onto T1 Trunks 49
- • 4-wire E&M trunks 51
- • DDS data-port adaptors 51
- • OCU data ports 51
- Multiplexing with Microwave 52
- Demultiplexing 52
- STATISTICAL MULTIPLEXING 54
- TRUNKING 55
- APPLICATION 55
- Local Exchange Trunks 55
- Tie Trunks 56
- Special-Access Trunks 57
- Auxiliary Trunks 57
- Miscellaneous Trunks 57
- CONNECTIVITY 58
- ADMINISTRATION OPTIONS 59
- System 85/G2 Administration 59
- • Line coding (ZCS or B8ZS) 61
- • Framing (D4 or ESF) 61
- • Mode 1 — 56 kbps channel 62
- TRUNKING 1-43 63
- 1-44 TRUNKING 64
- TRUNKING 1-45 65
- 1-46 TRUNKING 66
- TRUNKING 1-47 67
- 1-48 TRUNKING 68
- TRUNKING 1-49 69
- 1-50 TRUNKING 70
- TRUNKING 1-51 71
- 1-52 TRUNKING 72
- • Extension 84
- DIMENSION • • • • • • 90
- 3. TANDEM TIE TRUNK NETWORKS 93
- 3-2 TANDEM TIE TRUNK NETWORKS 94
- DIMENSIONs 101
- DIMENSION, System 85 105
- DIMENSION 120
- DIMENSION 12 120
- DIMENSION DCS 120
- DIMENSION, System 85, and 121
- DIMENSION, System 121
- DIMENSION 4 20 121
- DEFINITY Communications 123
- DIMENSION Signaling Links 132
- FEATURE FP8 R1 R2 R1 G1 G2 135
- DIMENSION PBX 136
- DIMENSION and 140
- DIMENSION PBX and 142
- __________________ 150
- DTE CONNECTIONS 157
- DTE COMPATIBILITY 157
- Protocol Converters 157
- Terminal Emulators 158
- PC/PBX or PC/ISDN 158
- DCE POSSIBILITIES 159
- Data Modules 159
- DATA MODULE CHARACTERISTICS 160
- DTE CONNECTIONS 8-7 161
- DTE CONNECTIONS 8-9 163
- MODEM POOLING CONNECTIONS 164
- 8-12 DTE CONNECTIONS 166
- LAN TOPOLOGY 167
- LAN PROTOCOL 167
- LAN TRANSMISSION MEDIA 168
- LAN CONNECTORS 168
- • Electronic messaging 175
- • Electronic order exchange 175
- • File transfers 175
- ACCUNET Packet Service 176
- MPDM/M1* 177
- PRIVATE DATA NETWORKS 180
- THE ISDN GATEWAY 185
- DATA NETWORK ADMINISTRATION 189
- A. RELATED DOCUMENTS 199
- RELATED DOCUMENTS 200
- RELATED DOCUMENTS A-3 201
- RELATED DOCUMENTS A-5 203
- RELATED DOCUMENTS A-7 205
- RELATED DOCUMENTS A-9 207
- A-10 RELATED DOCUMENTS 208
- DEFINITY 217
- • Type I Interface 246
- DIMENSION PBX switches 250
- DIMENSION PBX with LC08 256
- MEGACOM Service 260
- * DTS = Dial Tone Start 263
- COMMUNICATIONS PROTOCOLS 274
- D-4 COMMUNICATIONS PROTOCOLS 276
- COMMUNICATIONS PROTOCOLS D-5 277
- D-6 COMMUNICATIONS PROTOCOLS 278
- COMMUNICATIONS PROTOCOLS D-7 279
- • Basic rate interface (BRI) 282
- COMMUNICATIONS PROTOCOLS D-11 283
- COMMUNICATIONS PROTOCOLS D-15 287
- VARIABLE LENGTH 287
- • RLR — remote loop request 288
- PARAMETER DCP ISDN-BRI 289
- COMMUNICATIONS PROTOCOLS D-19 291
- E. LEAD DEFINITIONS 293
- CIRCUIT CIRCUIT 294
- LEAD DEFINITIONS 296
- CIRCUIT OUTPUT 297
- CIRCUIT CIRCUIT OUTPUT 298
- NO. PLUS 299
- 7404D MPDM MTDM (NOTE 1) 299
- ABBREVIATIONS 307
- DATAPHONE digital service 308
- DIMENSION) 309
- ACCUNET Service 311
- AB-6 ABBREVIATIONS 312
- GLOSSARY 313
- GLOSSARY GL-3 315
- GLOSSARY GL-5 317
- GLOSSARY GL-7 319
- GLOSSARY GL-9 321
- GLOSSARY GL-11 323
- GLOSSARY GL-13 325
- GLOSSARY GL-15 327
- GLOSSARY GL-17 329
- GLOSSARY GL-19 331
- GLOSSARY GL-21 333
- GLOSSARY GL-23 335
- INDEX IN-3 339
- INDEX IN-5 341
- DIMENSION 2-6 342
- INDEX IN-7 343
- MEGACOM 1-37 344
- MEGACOM 800 1-37 344
- INDEX IN-9 345
- ACCUNET 1-37 347
- IN-12 INDEX 348
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