Enterasys Networks CSX5500, CSX6000, CSX7000 Commport Information, Line Background Information

USER’S GUIDE

decibel value of 0.0 (meaning no attenuation). If the distance is much closer (for example, 1000 ft.), the decibel value may be -15.0 (i.e., the signal is strong enough that it needs a certain amount of attenuation).

LINE TYPE

For V.35 and RS232 lines only. This parameter differentiates the network connections from connections to local computing devices. The network line type should be specified for lines that will be used by a Dedicated, Frame Relay, or X.25 Access.

DATA LINE IDLE CHARACTER

This identifies the idle character which is transmitted by the CyberSWITCH between the HDLC frames. The character choices are marks (all ’1’s) or HDLC flags (hexadecimal ’7E’), with marks being the default. In most situations, the default value is acceptable, as the receiving side should able to identify the start of a new frame after reception of either idle character. However, there may be some receiving devices which cannot properly make this determination with the default of idle marks. If communication cannot be established with the receiving device, you may need to take care that the idle character is set to a value that the receiving device will understand. For example, CISCO devices require the flag data line idle character.

COMMPORT INFORMATION

For systems using the asynchronous management port (COMMPORT) for out-of-band management. These elements control how the port will function. Elements include:

•modem name

•baud rate

•data bits

•stop bits

•parity value

•flow control type

•mode of operation

Mode of operation determines whether this port operates in autosense mode or terminal mode. Autosense mode offers the flexibility to use this port for console access, or to send PPP-async data. For console access, the remote user must press <Enter> or <Return> four times upon call connection. If no carriage returns are detected, the CyberSWITCH assumes it will receive PPP data.

Terminal mode requires no interaction. It automatically sends the attached device a login prompt for console access.

LINE BACKGROUND INFORMATION

Lines are communication facilities from the carriers. These lines directly attach to the system. From the system perspective, lines provide the physical connection to switched networks. Lines are not required for LAN connections.

Lines must be configured for BRI resources and PRI resources. For PRI resources, the CyberSWITCH supports both T1 lines (used in North America, Australia and Japan) and E1 lines (used in Europe, Mexico, South America, Korea). To specify the type of line as either T1 or E1, you need to set a hardware switch on the PRI resource itself. (See PRI adapter settings in the Hardware Installation chapter.)

When configuring PRI lines, you will need to specify framing type, line coding type, and T1 signaling method. Refer to the Configuration Elements section, which describes these characteristics.

126 CyberSWITCH