AT&T 2500 series Network Router User Manual


 
CONTENTS xi
_ ______________________________________________________________________________________
_ ______________________________________________________________________________________
_ ______________________________________________________________________________________
Figure 6-3. Direct Link DCS Connections 6-5
Figure 6-4. Minimized Link Connections 6-6
Figure 6-5. DCIU/PI Linkage in a DCS Cluster 6-7
Figure 6-6. Short Haul Analog Signaling: System 75/G1 to System 75/G1 Via DSU 6-8
Figure 6-7. Long Haul Analog Signaling: System 75/G1 to System 75/G1 Via Modem 6-9
Figure 6-8. Long Haul Digital Signaling: System 75/G1 to System 75/G1 Via AVD DS1 6-9
Figure 6-9. Long Haul Digital Signaling: System 75/G1 to System 75/G1 Via ISDN PRI 6-9
Figure 6-10. Short Haul Digital Signaling: System 75/G1 to System 75/G1 — Direct Via MPDM
or MTDM 6-10
Figure 6-11. Short Haul Analog Signaling: System 85/G2 to System 85/G2 Via DSU 6-10
Figure 6-12. Long Haul Analog Signaling: System 85/G2 to System 85/G2 Via Modem 6-11
Figure 6-13. Long Haul Digital Signaling: System 85/G2 to System 85/G2 Via ISDN PRI 6-11
Figure 6-14. Short Haul Analog Signaling: System 85/G2 to System 85/G2 — Direct Via IDI
(Isolating Data Interface) 6-11
Figure 6-15. Short Haul Analog Signaling: System 75/G1 to System 85/G2 — Direct Via
DSU 6-12
Figure 6-16. Long Haul Analog Signaling: System 75/G1 to System 85/G2 — Direct Via
Modem 6-12
Figure 6-17. Long Haul Digital Signaling: System 75/G1 to System 85/G2 Via AVD DS1 6-13
Figure 6-18. Long Haul Digital Signaling: System 75/G1 to System 85/G2 Via ISDN PRI 6-13
Figure 6-19. Short Haul Digital Signaling: System 75/G1 to System 85/G2 — Direct Via
MPDM 6-14
Figure 6-20. AUDIX in a DCS Network 6-20
Figure 7-1. Possible Data Connections 7-3
Figure 7-2. Synchronous vs. Asynchronous Communication 7-5
Figure 7-3. Modes of Link Operation 7-6
Figure 7-4. Serial vs. Parallel 7-7
Figure 7-5. Off-Premises Data-Only Extension — Configurations 7-12
Figure 8-1. PC/PBX and PC/ISDN 3270 Emulation Connections 8-4
Figure 8-3. External Modem Pool Using Intelligent Modems (Hayes-compatible) 8-11
Figure 8-4. Integrated Modem Pool 8-11
Figure 8-5. Modem Pooling over a DS1 Channel 8-12
Figure 8-6. Outside DTE Access to LAN 8-15
Figure 8-7. Outside PC Access to a LAN Operating with StarGROUP Software 8-17
Figure 8-8. Asynchronous Communications from LANs Operating with StarGROUP
Software 8-17