4. Configuration Options

Table 4-13. CSU/DSU Data Port Physical Interface Options (2 of 2)

Transmit Clock Source

Possible Settings: Internal, External

Default Setting: Internal

Determines whether the DTE’s transmitted data is clocked into the FrameSaver unit by internal transmit clock or external clock provided by the DTE.

NOTE: Changing this setting causes the FrameSaver unit to abort any physical port tests, including any DTE-initiated loopback tests.

Internal – The FrameSaver unit uses its own internal clock, 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 if the state of the Request To Send (RTS) circuits on the user data port are used to determine when valid data communication with the DTE is possible. 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 DTE data communication is possible.

Disable – RTS is not monitored. RTS is assumed to be asserted and data is being transmitted, regardless of the state of the lead.

Monitor DTR

Possible Settings: Enable, Disable

Default Setting: Enable

Specifies whether the state of the DTE Ready (DTR) circuit on the user data port used to determine when valid data communication is possible with the DTE. When the DTR off condition is detected, an alarm is generated, LMI is declared down, and no further transfer of frame relay data can occur on this interface.

Enable – Interchange circuit CD (ITU 108/1/2) – DTR is monitored to determine when valid data is sent from the DTE.

Disable – DTR is not monitored. DTR is assumed to be asserted and data is being transmitted, regardless of the state of the lead.

Port (DTE) Initiated Loopbacks

Possible Settings: Local, Disable

Default Setting: Disable

Allows a local external DTE Loopback to be started or stopped via the port’s attached DTE interchange lead LL (ITU 141).

Local – The DTE attached to the port controls the local external DTE Loopback.

Disable – The DTE attached to the port cannot control the local external DTE Loopback.

9700-A2-GB20-20

December 2002

4-29

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Paradyne 9720 CSU/DSU Data Port Physical Interface Options 2, Transmit Clock Source, Monitor RTS Control, Monitor DTR
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9720, 9788 specifications

The Paradyne 9820-8M, 9788, 9128 standalone, 9128 carrier-mount, and 9820-2M are critical components in telecommunications networks, designed to enhance data transmission and improve connectivity. Each model offers unique features and capabilities that cater to various requirements in both enterprise and service provider environments.

The Paradyne 9820-8M is a multi-service access platform that provides high-speed connectivity for voice, video, and data transmission. It supports multiple protocols, enabling seamless integration into existing infrastructures. Key features include a modular design that allows for scalability and easy upgrades, ensuring that organizations can adapt to evolving demands. Its advanced error correction and QoS (Quality of Service) features ensure reliable performance, even in challenging network conditions.

The Paradyne 9788 serves as a versatile platform for both digital and analog communications. It excels in the delivery of broadband services, supporting T1/E1 lines and providing robust mechanisms for data transmission. This model emphasizes redundancy and resilience, with built-in protection switching capabilities that maintain service continuity during faults or maintenance activities. Its compact design makes it an ideal solution for environments with space constraints.

The 9128 standalone model is aimed at customers requiring an easy-to-deploy solution for point-to-point connections. This model offers critical features such as an intuitive user interface, comprehensive diagnostics, and monitoring capabilities that facilitate system management. It also supports diverse network topologies, making it suitable for various deployment scenarios.

In contrast, the 9128 carrier-mount version is engineered for organizations needing to manage multiple connections within a central office or remote site. This model is specifically designed to be mounted in standard telecom racks, optimizing space utilization while maintaining high performance. Its robust hardware allows for excellent thermal management and environmental resilience.

Lastly, the Paradyne 9820-2M combines versatility with high-performance capabilities, making it a reliable choice for service providers. It features dual-channel support, enabling simultaneous transmission and providing a cost-effective solution for high-capacity data needs. With enhanced security features, including encryption capabilities, the 9820-2M ensures that sensitive information transmitted across networks is protected against unauthorized access.

Collectively, these Paradyne models exemplify advanced telecommunications technology, offering scalability, resilience, and high performance. Their diverse features cater to the unique demands of various users, from enterprise networks to service providers, facilitating the continual evolution of communication technologies.
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