User's Manual
Table Of Contents
- Contents
- About This Guide
- About the FrameSaver DSL Unit
- User Interface and Basic Operation
- Configuration Procedures
- Configuration Options
- Overview
- Using the Easy Install Feature
- Setting Up So the Router Can Receive RIP
- Entering System Information and Setting the System Clock
- Configuration Option Tables
- Configuring the Overall System
- Configuring the Physical Interfaces
- Configuring Frame Relay for the Data Port
- Configuring ATM for the Network Interface
- Configuring Circuit and DLCI Records
- Configuring PVC Connections
- Setting Up Management and Communication Options
- Configuring Node IP Information
- Configuring Management PVCs
- Configuring General SNMP Management
- Configuring Telnet and/or FTP Session Support
- Configuring SNMP NMS Security
- Configuring SNMP Traps
- Configuring the Ethernet Port
- Configuring the Communication Port
- Configuring the COM Port to Support an External Modem
- Security and Logins
- Operation and Maintenance
- FTP Operation
- Troubleshooting
- Setting Up OpenLane for FrameSaver Devices
- Setting Up Network Health for FrameSaver Devices
- Menu Hierarchy
- SNMP MIBs and Traps, and RMON Alarm Defaults
- Connectors, Cables, and Pin Assignments
- Technical Specifications
- Equipment List
- Index

Configuration Options
4-14
9783-A2-GB20-00
July 2000
Configuring the User Data Port
Select Physical from the Data Ports menu to configure the physical
characteristics for the user data port (see Table 4-6).
Main Menu
→
Configuration
→
Data Ports
→
Physical
Table 4-6. Data Port Physical Interface Options (1 of 2)
Invert Transmit Clock
Possible Settings: Auto, Enable, Disable
Default Setting: Auto
Determines whether the clock supplied by the FrameSaver unit on interchange circuit
DB (ITU 114) – Transmit Signal Element Timing (DCE Source) TXC is phase inverted
with respect to the clock used to time the incoming Transmitted Data (TD).
Auto – The port will check the clock supplied by the DCE on TXC on this port. If
necessary, the port will automatically phase invert the clock with respect to the
transmitted data.
Enable – Phase inverts the TXC clock. Use this setting when long cable lengths
between the FrameSaver unit and the DTE are causing data errors.
Disable – Does not phase invert the TXC clock.
Transmit Clock Source
Possible Settings: Internal, External
Default Setting: Internal
Determines whether the DTE’s transmitted data is clocked into the FrameSaver unit by
its internal transmit clock or by the external clock provided by the DTE.
NOTE: Changing settings for this configuration option causes the FrameSaver unit
to abort any physical port tests, including any DTE-initiated loopback tests.
Internal – The FrameSaver unit uses the interchange circuit DB (ITU 114) – Transmit
Signal Element Timing (TXC) (DCE source) for timing the incoming data.
External – The DTE provides the clock for the transmitted data, and the FrameSaver
unit uses the interchange circuit DA (ITU 113) – Transmit Signal Element Timing (XTXC)
(DTE source) for timing the incoming data.
Monitor RTS (Control)
Possible Settings: Enable, Disable
Default Setting: Enable
Specifies whether the state of the Request To Send (RTS) circuits on the user data port
will be used to determine when valid data communication is possible with the DTE.
When the RTS off condition is detected, CTS is deasserted, LMI is declared down, and
no further transfer of frame relay data can occur on this interface.
Enable – Interchange circuit CA (ITU 105) – RTS is monitored to determine when valid
data communication is possible with the DTE.
Disable – RTS is not monitored. RTS is assumed to be asserted and data is being
transmitted, regardless of the state of the lead.