1. Figure 6-14 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998 DB-37 and DB-9 Connectors

2. RS-423: Unbalanced Mode Figure 6-15 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

3. RS-422: Balanced Mode Figure 6-16 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

4. Canceling Noise Figure 6-17 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

5. DB-15 Connector Figure 6-18 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

6. Figure 6-19 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998 Modem

7. Bandwidth for Telephone Line Figure 6-20 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

8. Baud Rate for Half-Duplex ASK Figure 6-21 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

9. Baud Rate for Full-Duplex ASK Figure 6-22 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

10. Baud Rate for Half-Duplex FSK Figure 6-23 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

11. Baud Rate for Full-Duplex FSK Figure 6-24 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

12. Bell Modems Figure 6-25 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

13. Bell Modems Figure 6-25-continued WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

14. ITU Modems Figure 6-26 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

15. ITU Modems Figure 6-26-continued WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

16. V.22bis 16-QAM Constellation Figure 6-27 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

17. V.32 Constellation Figure 6-28 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998

18. V.33 Constellation Figure 6-29 WCB/McGraw-Hill  The McGraw-Hill Companies, Inc., 1998