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Cable Modem (CM) Mode

Fig. 3-2 Cable Modem Mode

Fig. 3-3 Two IP stacks are activated in cable modem mode

CM (Cable Modem) Mode provides basic home networking. In this mode, two IP stacks are active:

IP Stack 1 - for use by the cable company to communicate with the cable modem section only. This

stack receives its IP address from the cable company during CM initialization. It uses the MAC

address printed on the label attached to the Wireless Cable gateway.

IP Stack 2 - for use by you, the end user, to communicate with the cable modem and Networking

sections, to access the internal web page diagnostics and configuration. This stack uses a fixed IP

address: 192.168.100.1. It uses a MAC address 00:10:95:FF:FF:FE.

With CM Mode, your cable company must provide one IP address for the CM section, plus one for each

PC you connect from their pool of available addresses. Your cable company may have you or your

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installer manually enter these assigned addresses into your PC, or use a DHCP Server to communicate

them to your PCs, or use a method that involves you entering host names into your PCs.

Note that in CM Mode, packets passing to the Internet to/from your PCs do not travel through any of the

IP stacks; instead they are directly bridged between the WAN and LAN sides.

Residential Gateway (RG) Mode

Fig. 3-4 Residential Gateway Mode

Fig. 3-5 Three IP stacks are activated in cable modem mode

RG (Residential Gateway) Mode provides basic home networking plus NAT (Network Address

Translation). In this mode, three IP stacks are active:

IP Stack 1 - for use by the cable company to communicate with the Cable Modem section only. This

stack receives its IP address from the cable company during CM initialization. It uses the MAC

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address printed on the label attached to the Wireless Cable Gateway.

IP Stack 3 - for use by you to remotely (i.e. from somewhere on the WAN side, such as at your

remote workplace) communicate with the Cable Modem and Networking sections, to remotely access

the internal web page diagnostics and configuration. This stack is also used by your cable company to

deliver packets between the Internet and the gateway’s networkin

g section so they can be routed

to/from your PCs. This stack requires an IP address assigned by the cable company from their pool of

available addresses. Your cable company may have you or your installer manually enter assigned

addresses into your gateway, or use a DHCP Server to communicate them, or use a method that

involves you entering host names. This stack uses a MAC address of MAC label + 2 (the MAC label

is found on the bottom of the unit). E.g., if the MAC address is 00:90:64:12:B1:91, this MAC address

would be 00:90:64:12:B1:93.

IP Stack 5 - for use by you to locally (i.e. from somewhere on the LAN side in your home)

communicate with the Cable Modem and Networking sections, to access the internal web page

diagnostics and configuration. This stack i

s also used by the gateway’s networking section to route

packets between the gateway’s Networking section and your PCs. This stack uses a fixed IP address:

192.168.0.1. It uses a MAC address of MAC label + 4 (the MAC label is found on the bottom of the

unit). E.g., if the MAC address is 00:90:64:12:B1:91, this MAC address would be 00:90:64:12:B1:95.

With RG Mode, your cable company must provide one IP address for the CM section, plus one for the

Networking section, from their pool of available addresses. With RG Mode, each PC you connect gets an

IP address from a DHCP Server that is part of the Networking section of the gateway.

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CHAPTER 4: ADDITIONAL INFORMATION

Frequently Asked Questions

Q. What if I don’t subscribe to cable TV?

A. If cable TV is available in your area, data and voice service may be made available with or without

cable TV service. Contact your local cable company for complete information on cable services,

including high-speed internet access.

Q. How do I get the system installed?

A. Professional installation from your cable provider is strongly recommended. They will ensure proper

cable connection to the modem and your computer. However, your retailer may have offered a self

installation kit, including the necessary software to communicate with your cable ISP.

Q. Once my Wireless Voice Gateway is connected, how do I get access to the Internet?

A. Your local cable company provides your internet service*, offering a wide range of services including

email, chat, and news and information services, and a connection to the World Wide Web.

Q. It seems that the wireless network is not working

A. Check the Wireless LED on the front panel. If it is no lighted, press on the WPS button shortly, less

than 1 second, on the side of the modem, and then check again the Wireless LED. If it is lighted, then

the Wireless transmission is enabled.

Q. Can I watch TV, surf the Internet, and talk to my friends through the Wireless Voice Gateway at the

same

time?

A. Absolutely!

Q. What do you mean by

“Broadband?”

A. Simply put, it means you’ll be getting information through a “bigger pipe,” with more bandwidth, than

a standard phone line can offer. A wider, “broader” band means more information, more quickly.

Q. What is Euro-DOCSIS and what does it mean?

A. “Data over Cable Service Interface Specifications” is the industry standard that most cable companies

are adopting as they upgrade their systems. Should you ever decide to move, the Wireless Voice

Gateway will work with all upgraded cable systems that are Euro-DOCSIS-compliant.

Q. What is Euro-PacketCable and what does it mean?

A. Euro-PacketCable is the industry standard for telephony services that most cable companies are

adopting as they upgrade their systems. Should you ever decide to move, the Wireless Voice Gateway

will work with all upgraded cable systems that are Euro-PacketCable compliant.

Q. What is Xpress Technology and what does it mean?

A. It is one of the popular performance-enhancing Wi-Fi technologies, designed to improve wireless

network efficiency and boost throughput. It is more efficient in mixed environments, and it can work

with 802.11a/b/g networks. When Xpress is turned on, aggregate throughput (the sum of the individual

throughput speeds of each client on the network) can improve by

up to

27% in 802.11g-only networks,

and

up to

75% in mixed networks comprised of 802.11g and 802.11b standard equipment. The

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technology achieves higher throughput by re-packaging data, reducing the number of overhead control

packets, so that more useful data can be sent during a given amount of time.

* Monthly subscription fee applies.

** Additional equipment required. Contact your Cable Company and ISP for any restrictions or additional

fees.