Administrator's Guide

Table of Contents

Part I. Introduction to 3Com VCX IP Telecommuting Module .......................................i

1. Introduction to 3Com VCX IP Telecommuting Module ...........................................1

2. Installing 3Com VCX IP Telecommuting Module ....................................................7

3. Conﬁguring 3Com VCX IP Telecommuting Module..............................................17

Part II. How To................................................................................................................... 27

4. How To Conﬁgure SIP.............................................................................................29

5. How To Conﬁgure Advanced SIP............................................................................55

Part III. Description of 3Com VCX IP Telecommuting Module Settings ....................73

6. Basic Conﬁguration .................................................................................................75

7. Administration .......................................................................................................103

8. Network Conﬁguration ..........................................................................................119

9. Logging..................................................................................................................137

10. SIP Services .........................................................................................................159

11. SIP Trafﬁc............................................................................................................185

12. Tools.....................................................................................................................217

13. Firewall and Client Conﬁguration........................................................................223

Part IV. 3Com VCX IP Telecommuting Module Serial Console.................................227

14. Basic Administration ...........................................................................................229

15. Command Line Reference ...................................................................................237

Part V. Appendices ..........................................................................................................319

A. More About SIP ....................................................................................................321

B. Troubleshooting.....................................................................................................329

C. Lists of Reserved Ports, ICMP Types and Codes, and Internet Protocols ............335

D. Deﬁnitions of terms...............................................................................................347

E. License Conditions ................................................................................................359

F. Obtaining Support for Your 3Com Products .........................................................431

Index..................................................................................................................................435