![background image](http://html1.mh-extra.com/html/3com/officeconnect-3c892a/officeconnect-3c892a_user-manual_440927113.webp)
What is a network?
107
What is DHCP?
Dynamic Host Configuration Protocol automatically assigns a unique, temporary IP
address to a newly attached computer on an IP network.
What is DNS?
Domain Name Service translates the common alphabetic name into the numeric IP
address. For example, floyds_PC is translated to 193.6.14.2. If you do not use the
DHCP functionality of the ISDN LAN Modem, you will have to manually configure
the following parameters for each computer on the LAN: IP address, subnet mask,
DNS address and default gateway.
What is NAT?
Network Address Translation, also known as IP address sharing, allows multiple
users to share a single connection such as an Internet connection. For example,
with the ISDN LAN Modem, when users on the LAN launch their Web browser for
Internet access, their computer’s IP address is translated into the IP address
provided by the ISP for access.
You will probably not want to use NAT If your LAN network is static; that is, an IP
address is assigned to your computer by your MIS department or ISP and manually
configured.
What are numbered and
unnumbered links?
Some networks require an IP address to be assigned to a WAN in addition to the
LAN(s). If a WAN has an IP address assigned to it, it is considered to be a
numbered link. If there is not an IP address assigned to a WAN, it is considered to
be an unnumbered link.
What is Subaddressing?
Subaddressing allows you to assign specific telephone numbers to the devices
attached to the analog ports by arbitrarily assigning extensions to your ISDN
telephone number to route calls to different devices.
What is Multiple
Subscriber Numbering
(MSN)?
Multiple Subscriber Numbering is a service offered by some telephone companies
that allows you to have multiple telephone numbers assigned to your ISDN line.
This allows you to dedicate a telephone number to each device attached to the
ISDN LAN modem.
How is overall
throughput determined?
The performance of all linked devices must be considered to determine
end-to-end throughput. Connection performance is affected by each device in the
chain. Therefore, the slowest link in the chain determines the maximum
throughput. On the LAN side, computers on a typical network can communicate
with each other at up to 10 Mbps. When dialing up to a long distance location
using ISDN, you can establish a network connection speed of up to 128 Kbps
without compression or up to 384 Kbps with compression. If you are dialing into
the Internet, the speed of the router providing access must also be considered. In
addition, the Internet itself may have speed limitations.
Содержание OfficeConnect 3C892A
Страница 1: ...http www 3com com OfficeConnect ISDN LAN Modem User Guide Part No 984 000026 2 Published January 1999 ...
Страница 8: ......
Страница 14: ......
Страница 22: ...16 CHAPTER 1 INTRODUCTION ...
Страница 32: ...26 CHAPTER 2 ISDN LAN MODEM FUNCTIONALITY DESCRIPTION ...
Страница 42: ...36 CHAPTER 3 HARDWARE DESCRIPTION AND INSTALLATION ...
Страница 52: ...46 CHAPTER 4 SETTING UP TCP IP FOR WINDOWS AND MACINTOSH ...
Страница 64: ...58 CHAPTER 5 CONFIGURING THE ISDN LAN MODEM ...
Страница 90: ...84 CHAPTER 7 SUPPLEMENTARY VOICE CALL SERVICES ...
Страница 96: ...90 CHAPTER 8 PLACING RECEIVING AND DISCONNECTING CALLS ...
Страница 114: ...108 APPENDIX A NETWORKING PRIMER ...
Страница 118: ...112 APPENDIX C ISDN LAN MODEM FACTORY DEFAULTS ...
Страница 122: ...116 APPENDIX D ISDN LAN MODEM SPECIFICATIONS ...
Страница 126: ...120 GLOSSARY ...
Страница 128: ...122 INDEX ...