User's Manual

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Overview of the WMTS and Modem Configuration – p.

6. .

NOTE 1: Five T1s per 3.2MHz upstream channel using

16QAM modulation is the hard limit for the current

system. Attempting to configure more T1s on an

upstream channel than it can support will cause the

modem initialization to fail. Consult your system engineer

for advice on the maximum number of modems per

upstream channel ID.

7. Use the appropriate DHCP tool for your system to bind the modem’s

MAC address to its IP address and modem configuration file. If ipLease

is used, edit and compile the CM.SRC file as needed. If Windows 200x

Server Edition is used then set these values using the graphical user

interface. These procedures are described in section 5.2.2, Windows

200x Server Edition: Modifying the DHCP Options

NOTE: this step is ALWAYS required when adding a

modem

8. Use the modem’s Telnet server interface to set the modem to a

permanent downstream frequency as described in Setting the Modem’s

Downstream Frequency. Having a permanent (fixed) downstream

frequency (or set of frequencies) expedites the modem initialization

process since the modem does not have to scan multiple downstream

frequencies to find one being transmitted from the WMTS. This does,

however, require some pre-planning of the network to pre-allocate

different downstream frequencies to specific modems. Ask your System

Engineer for details.

NOTE: this step is ALWAYS required when adding a

modem with a fixed permanent downstream frequency

9. If a T1 connection is being setup then use the procedures in Configuring

a T1 Connection. Configure the WMTS upstream channel ID for E1/T1

operation and bind the WMTS upstream channel ID to the modem E1/T1

interface and to bind the modem’s E1/T1 interface to a particular port on

the E1/T1 card plugged into the WMTS (use the Vyyo Configuration tool

for this procedure.)

NOTE: the Vyyo Configuration tool binding operation will

ALWAYS be required when adding a T1 modem. This

step can be done after the modem is installed at the

customer’s site.

10. Install the modem at the customer site and connect it to the RF

equipment, provide power to the modem and turn it on.

NOTE: This step is ALWAYS required when adding a

modem