Frame Relay Service Modules FRSMs | Cisco Systems MGX 8220 manual

Chapter

Frame Relay Service Modules (FRSMs)

The primary function of the FRSM is to convert between the Frame Relay formatted data and ATM/AAL5 cell-formatted data. There are two main types of FRSMs, those for T1 or E1 lines and those for high speed serial lines.

All FRSMs include the following features:

•ForeSight closed-loop rate control and per-VC queuing

•Wire-speed performance on all ports

•SVC and multicast support within Cisco service nodes

•Standard and enhanced LMI management interfaces (Annex A and Annex D) Module-specific features are described in the sections listed below.

•FRSM Connection Types, page 4-2

•FRSMs for T1 and E1 lines, page 4-7

•FRSMs for High Speed Serial Lines, page 4-9

•Frame Relay Access Service Module, page 4-11

FRSM Connection Types

FRSMs convert the header format and translate the address for

•Frame Relay port number and DLCI

•ATM-Frame UNI (FUNI) port number and frame address or frame forwarding port

•ATM Virtual Connection Identifier (VPI/VCI)

This section describes the connection types that can be configured on the FRSM to perform these functions.

•Frame-Relay-to ATM Network Interworking (NIW), page 4-2

•Frame-Relay-to ATM Service Interworking (SIW), page 4-4

•Frame Forwarding, page 4-6

•Frame-basedUser-to-Network Interface (FUNI), page 4-6

Frame-Relay-to ATM Network Interworking (NIW)

Frame Relay-to-ATM network interworking (NIW) supports a permanent virtual connection (PVC) between two Frame Relay users over a Cisco network or a multi-vendor network. The traffic crosses the network as ATM cells. To specify NIW for a connection, add the connection with a channel type of network interworking.

Figure 4-1shows a BPX 8620 network with network interworking connections.

	Cisco MGX 8220 Installation and Configuration
4-2	Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

MGX 8220 specifications

The Cisco Systems MGX 8220 is a versatile, high-performance media gateway that has become an integral component in the telecommunications infrastructure. Designed to facilitate the transition from traditional circuit-switched networks to advanced packet-switched environments, the MGX 8220 supports a wide array of voice, video, and data services, making it an essential tool for service providers and enterprises seeking to enhance their network capabilities.

One of the key features of the MGX 8220 is its robust signaling and media processing capabilities. Equipped with support for both Voice over IP (VoIP) and traditional telephony protocols, this gateway enables seamless integration of different communication formats. It boasts a modular architecture, which allows for the addition or removal of various line cards to meet changing demands and technology advancements. This modularity provides operators with the flexibility to scale their services without significant overhauls to their existing infrastructure.

The MGX 8220 is capable of delivering high-density media handling for a multitude of services. With its support for ATM and IP networks, the gateway can handle TDM (Time-Division Multiplexing) to packet voice conversions efficiently. It is designed to optimize network resources by dynamically allocating bandwidth based on traffic requirements, thus ensuring efficient use of network resources and improved performance.

Another significant characteristic of the MGX 8220 is its enhanced quality of service (QoS) features. This capability ensures that voice and video traffic is prioritized appropriately, minimizing latency and jitter while maximizing overall call quality. By employing sophisticated traffic management techniques, the MGX 8220 can deliver a superior user experience, which is critical for any service provider aiming to offer competitive communication solutions.

Furthermore, the gateway includes built-in security features to protect against unauthorized access and ensure the integrity of sensitive data. This includes encryption for voice and video transmission, as well as support for secure signaling protocols.

Overall, the Cisco Systems MGX 8220 stands out as a comprehensive media gateway solution, providing essential functionalities for modern communication needs. Its combination of modularity, high-density processing, effective QoS management, and security features makes it a compelling choice for organizations looking to modernize their telecommunications infrastructure while ensuring reliability and performance. As businesses continue to evolve and demand more from their networks, the MGX 8220 offers a pathway to future-ready communications.

Cisco Systems MGX 8220 manual Frame Relay Service Modules FRSMs, Frsm Connection Types

Models: MGX 8220