User Guide

Specifications: 3Com Modem User's Guide

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Specifications: 3Com Modem User's Guide

General

Manufacturer: 3Com Corporation

Model: 3CP3298-DEL

Supported Countries: United States and Canada

Operational

Transfer rates:

300 bps

1200 bps

1200/75 bps

2400 bps

4800 bps

7200 bps

9600 bps

14.4 Kbps

16.8 Kbps

21.6 Kbps

24 Kbps

26.4 Kbps

28.8 Kbps

31.2 Kbps

33.6 Kbps

56 Kbps (See Introduction for disclaimer on 56K transfer rate)

Link Rates

Front Channel Link Rates
28000, 29333, 30666, 32000, 33333, 34666, 36000, 37333, 38666, 40000, 41333, 42666, 44000, 45333, 46666, 48000, 49333, 50666, 52000, 53333, 54666, 56000, 57333

Back Channel Link Rates
4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800, 31200

V.34+ Link Rates
4800, 7200, 9600, 12000, 14400, 16800, 19200, 21600, 24000, 26400, 28800, 31200, 33600

V.32bis Link Rates
4800, 7200, 9600, 12000, 14400

Additional Link Rates
300, 1200/75 (V.23), 1200, 2400

Fax Link Rates
2400, 4800, 7200, 9600, 12000, 14400

Command Set

3Com "AT" and Hayes "AT"

Connectors

Dual RJ-11 jack provides the interface from the modem to the Telco line and to a telephone.

TAPI connector

PCI edge connector per PCI specifications revision 2.2

Mechanical

Electrical

Voltage supply	Typical current	Maximum current
+5V	400 mA	500 mA
+12V	30 mA	50 mA
-12V	30 mA	50 mA
+V_I/O (+3.3V)	< 1m A	N/A

Environmental

Operating: (ambient temperature outside PC): 0 to 50 � C

(provided that the temperature gradient inside the PC is less that 20 �C).

Non-operating: -40 to 85 � C

Protocols and Standards

Universal Compatibility

The International Telecommunication Union (ITU) determines the technical protocols that communications devices must use to operate with each other. Modems that comply with ITU standards can "talk" to other standards-compliant modems and fax machines worldwide. The ITU has decided on a worldwide standard for 56K modem technology. With a 3Com U.S. Robotics modem, you can get 56K Internet access from any service provider who offers the ITU V.90 standard or 3Com 56K technology. 3Com is working with providers everywhere to quickly upgrade their service to the ITU V.90 standard.

Modulation Schemes

ITU-T V.90
ITU-T V.34+
ITU-T V.34
ITU-T V.32bis
ITU-T V.32
ITU-T V.23
ITU-T V.22bis
ITU-T V.22
Bell 212A
ITU-T V.21
Bell 103

Error Control and Data Compression Schemes

ITU-T V.42
ITU-T V.42bis
MNP 2-5

Fax Modulation Schemes

ITU-T V.17
ITU-T V.29
ITU-T V.27ter
ITU-T V.21

Voice Compression and Coding

GSM, IMA, ADPCM

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