3Com Dual 56K manual Modem Control Parameter Description

Configuring V.90 Modem Control Parameters 83

4In the Local Domain Name field, you may choose to enter a name to identify this particular LAN on a network. Note that this field is not required. Leave blank if you are unsure about how to configure a local domain name.

5Check the Enable DHCP server box to enable it or clear the box to disable it.

WARNING: If you change the IP address and/or the subnet mask of your Dual 56K LAN Modem, the Dual 56K LAN Modem will re-initialize itself when you submit the changes by clicking Submit. When the re-initialization occurs, all calls are terminated, and you may have to reconfigure the IP addresses on the computers on the LAN.

6For NetBIOS filtering, make your selection from the drop-down list box.

7Click Submit.

If you wish to password protect the configuration profile of the Dual 56K LAN Modem, refer to “Locking and Unlocking the Configuration.”

Configuring V.90	Most users will be able to safely leave the modem control parameters set to their
Modem Control	default values. Advanced users may further define the manner in which the LAN
Parameters	Modem operates when placing V.90 calls. This section describes modem control
	parameters and provides instructions for changing these parameters.

Understanding Modem Each service provider that you configure (up to four) is automatically associated Controls with its own corresponding modem control profile. If you would like to further define the performance of the modems for each service provider, you may do so

as described in this section. Table 5 gives a description of each modem control parameter.

Table 5 Modem Control Parameters

Modem Control Parameter	Description
US/ITU-T answer sequence	Allows you to set your answer sequence.
Guard Tone	Allows you to specify the guard tone for your geographical
	region.
56K	If enabled: Sets the minimum CONNECT rate.
	If disabled: Sets the ceiling CONNECT rate to 33600.
Pulse (rotary) dial make/break	Sets the make/break ratio for pulse dialing.
ratio
Minimum Connect Speed	Sets the minimum speed at which the modem is allowed to
	connect.
Speaker Operations	Allows you to change your LAN Modem’s speaker settings.
Dialing	Specifies either pulse or tone dialing.
Data Compression	Sets your data compression preference
Error Control (ARQ)	Sets your error control preference
Advanced Modem init. String	Advanced users can further modify the modem settings
	each time a call is made.