Configuration Option Tables

Table A-2. Synchronous Data Port Options (2 of 3)

Invert Transmit Clock

Possible Settings: Disable, Enable

Default Setting: Disable

Specifies whether the clock supplied by the 7975 Termination Unit on the TXC interchange circuit DB (CCITT 114) is phase inverted with respect to the Transmitted Data interchange circuit BA (CCITT 103). This configuration option is useful when long cable lengths between the 7975 Termination Unit and the DTE are causing data errors.

Disable ± Indicates TXC supplied by the 7975 Termination Unit on this port is not phase inverted.

Enable ± Indicates TXC supplied by the 7975 Termination Unit on this port is phase inverted.

Send All Ones on Data Port Not Ready

Possible Settings: Both, Disable, DTR, RTS

Default Setting: Both

Specifies the conditions on the data port that determine when valid data is not being sent from the DTE. When this condition is detected, all ones are sent to the network.

Both ± Monitors both DTR and RTS. If either is interrupted, all ones are sent to the network.

Disable ± Disables the monitoring of interchange circuits from the DTE connected to the synchronous data port.

DTR ± Monitors the DTE Ready interchange circuit CD (CCITT 108/1/2). When DTR is interrupted, all ones are sent to the network.

RTS ± Monitors the Request-to-Send interchange circuit CA (CCITT 105). When RTS is interrupted, all ones are sent to the network.

Action on Network LOS Alarm

Possible Settings: Halt, None

Default Setting: Halt

Specifies the action taken on the synchronous data port when an LOS (Loss Of Signal) alarm is received on the network interface.

Halt ± Stops the transmission of data on the data port and disables the data port when an LOS alarm is received on the network interface. When LOS alarms are received, all ones are sent on the Received Data interchange circuit BB (CCITT 104). The Clear-to-Send interchange circuit CB (CCITT 106) is interrupted.

None ± Makes the data port unaffected by LOS alarms received on the network interface.

Network Initiated Data Channel Loopback

Possible Settings: Disable, Enable

Default Setting: Disable

Allows the initiation and termination of a Data Channel Loopback (DCLB) by the receipt of a DCLB-actuate sequence or DCLB-release sequence from the network or far-end device.

Disable ± Ignores the DCLB-actuate and DCLB-release sequences for this port.

Enable ± DCLB-actuate and DCLB-release sequences are recognized for this port.

7975-A2-GB20-40

December 1998

A-5

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Image 85
Paradyne 7975 manual Table A-2. Synchronous Data Port Options 2, Invert Transmit Clock, Action on Network LOS Alarm

7975 specifications

The Paradyne 7975 is a robust and versatile product that has made significant strides in the realm of data communications. This device primarily facilitates high-speed data transmission, leveraging advanced technologies designed to optimize performance and reliability. One of its standout features is its ability to handle both analog and digital signals, making it an essential tool for various networking environments.

One of the key technologies employed in the Paradyne 7975 is the use of digital signal processing (DSP). This technology enhances the quality of signals transmitted over long distances, reducing the impact of noise and other interferences that can degrade performance. The integration of DSP allows for improved error correction techniques, ensuring data integrity during transmission.

Another notable feature of the Paradyne 7975 is its compatibility with a range of communication protocols. This inclusivity allows users to connect the device seamlessly with existing infrastructure, facilitating a smooth transition to higher data rates without the need for extensive upgrades. The product supports both T1 and E1 lines, catering to various network structures and requirements.

In terms of performance, the Paradyne 7975 boasts data rates of up to 2.048 Mbps for E1 and 1.544 Mbps for T1, allowing for efficient bandwidth utilization. Its architecture is designed for scalability, enabling businesses to expand their networks without encountering significant bottlenecks. Additionally, the device features built-in diagnostics and monitoring capabilities, which provide administrators with real-time insights into network performance and health.

The physical design of the Paradyne 7975 is also noteworthy. It typically comes in a compact form factor that can easily fit into standard telecommunications racks, making it a space-saving solution for data centers and offices. Its rugged construction ensures longevity and reliability, even in demanding environments.

Moreover, the device includes an intuitive user interface that simplifies configuration and maintenance processes, reducing the overall burden on IT staff. Additionally, its adaptive capabilities enable the device to automatically adjust to varying line conditions, ensuring optimal performance at all times.

Overall, the Paradyne 7975 stands out as a comprehensive solution for businesses seeking to enhance their data communication infrastructures. With its advanced features, compatibility, and user-friendly design, it continues to be a preferred choice for organizations looking to leverage high-speed data transmission technologies.