Chapter 8 Permanent Virtual Connections (PVCs and PVPs)

Note: Before you attempt to set up a PVC you will need to reduce the signalling VCI range, for a virtual port, that is used for SVCs.

Do not use a VCI in the range [0...31] as these are reserved by the ATM Forum. To reduce the VCI range, see Setting Virtual Port Parameters in Chapter 6 Managing Virtual Ports.

Since a VCL is bi-directional, a traffic descriptor needs to be defined for the transmit and receive data paths belonging to the VCL. For VCL A, the traffic descriptor for the receive data path at port B should be the same as the traffic descriptor for the transmit data path at port A. Similarly, the traffic descriptor for the transmit data path at port B should be the same as the traffic descriptor for the receive data path at port A. For more information about managing traffic descriptors, see Managing Traffic Descriptors later in this chapter.

Creating a PVC connection

PVC connections will be re-established automatically when the M770 ATM Switch powers up. You can have up to 1k (1024) PVC connections on a module.

Creating a Point-to-Point (PP) PVC connection

To set up a PP PVC with uni-directional traffic on one module, you must set up a bi- directional PP PVC that has a Peak Cell Rate (PCR) of zero in one direction. To set up a bi-directional PVC between 2 ports on different modules (on the same switch) you must type the command on the CLI of each module.The appropriate order of the VCL and the td1, td2 should switch places (rx-td in one module should be the tx- td in the other module).

The command described below will setup a VCL on each <slot.port.vpi.vci> and a PVC connection joining the two. The PVC connection will be automatically assigned an id.

Traffic descriptors do not have to be specified. If they are not, UBR traffic will be assumed and an existing UBR traffic descriptor will be used. If no such traffic descriptor exists, one will be automatically set up for UBR traffic. If any other type of traffic is required, you must first set up the traffic descriptors in the usual way (using the command td setup). on the required modules.

If one of the specified VCLs already exists, this VCL’s traffic descriptors will be used in preference to any other VCLs specified by the user. If both VCLs already exist, their traffic descriptors must be compatible (that is the transmit and receive traffic descriptor identifiers) for the command to succeed.

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Avaya M770 manual Creating a PVC connection, Creating a Point-to-Point PP PVC connection
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M770 specifications

The Avaya M770 is a highly advanced media processor that is part of Avaya's robust suite of communication solutions designed for enterprise environments. This powerful device caters to the needs of modern businesses, providing an efficient platform for managing voice, video, and data communications.

One of the standout features of the Avaya M770 is its high-density processing capability. The device can handle a significant volume of calls concurrently, which makes it an ideal solution for large organizations requiring a reliable communication backbone. The M770 supports a variety of codecs, ensuring high-quality audio and video transmission, which is pivotal for maintaining clarity during communication.

Incorporating cutting-edge technologies, the Avaya M770 is built upon a scalable architecture that allows for easy expansion as business needs evolve. This scalability means organizations do not have to invest in new equipment every time they grow; they can simply add additional resources to the existing system. This makes the M770 a cost-effective solution in the long run.

The M770 also boasts advanced security features, essential for protecting sensitive communications within a business. It employs encryption protocols to safeguard data and voice transmissions, ensuring that corporate information remains secure from potential cyber threats. This focus on security is increasingly critical in today's interconnected world, where data breaches can have devastating consequences.

Another notable characteristic of the Avaya M770 is its integration capabilities. The device can seamlessly connect with Avaya’s suite of applications and third-party solutions, enabling businesses to create a unified communications environment tailored to their specific needs. This interoperability allows for a more streamlined workflow, enhancing productivity within the organization.

Furthermore, the M770 features intuitive management tools that simplify the administration of telephony systems. With a user-friendly interface, IT administrators can easily monitor performance, manage resources, and troubleshoot issues. This ease of use reduces the time and effort needed for system management, allowing IT teams to focus on strategic initiatives.

In conclusion, the Avaya M770 is a comprehensive media processing solution that combines scalability, security, and ease of integration to meet the demands of contemporary enterprises. With its ability to support high-density communications and its advanced management capabilities, it serves as a critical asset for businesses looking to enhance their communication infrastructure.
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