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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..........................................................................................5
3. Configuring 3Com VCX IP Telecommuting Module ...................................................................................13
Part II. How To..........................................................................................................................................................20
4. How To Configure SIP...................................................................................................................................21
Part III. Description of 3Com VCX IP Telecommuting Module Settings............................................................35
5. The Serial Console ........................................................................................................................................36
6. Basic Configuration.......................................................................................................................................42
7. Network Configuration..................................................................................................................................60
8. SIP Services...................................................................................................................................................69
9. SIP Traffic......................................................................................................................................................82
10. Administration.............................................................................................................................................87
11. Logging........................................................................................................................................................98
12. Failover......................................................................................................................................................112
13. Tools ..........................................................................................................................................................118
14. Firewall and Client Configuration .............................................................................................................121
Part IV. Appendices................................................................................................................................................124
A. More About SIP..........................................................................................................................................125
B. Troubleshooting ..........................................................................................................................................127
C. Lists of Reserved Ports, ICMP Types and Codes, and Internet Protocols..................................................130
D. Definitions of terms ....................................................................................................................................140
E. License Conditions......................................................................................................................................147
F. Obtaining Support for Your 3Com Products...............................................................................................162
Index.........................................................................................................................................................................165
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