Chapter

Setting up a Frame Relay Connection

Table 5-1 addcon Parameters

Parameter

Description

 

 

MCR

Minimum Cell Rate

 

 

PCR

Peak Cell Rate

 

 

% Util

Percentage utilization of channel

 

 

Minimum Cell Rate (MCR) is only used with ForeSight (ATFST).

MCR and Peak Cell Rated (PCR) should be specified according to the following formula:

MCR = CIR * 3/800 cells per second

PCR = AR * 3/800 cells per second but less than or equal to 6000

AR = Frame Relay port speed in bps.

For example, AR equals 64K, PCR = 237, or

AR speed equals 256K, PCR = 950, or

AR speed equals 1536K, PCR = 5703

The above MCR and PCR formulae assume a fairly pessimistic frame size of 100 octets, however even smaller frame sizes can result in worst-case scenarios. For example,

For a frame size of 64 octects the PCR formula becomes PCR = AR * 2/512 cells per sec

For a frame size of 43 octects the PCR formula becomes PCR = AR * 2/344 cells per sec

The % Util should normally be set to the same value as that used for the Frame Relay segments of the connection.

FRSM Service Interworking Connections

FRSM service interworking connections are made in the same manner as the network interworking connections except that chan_type in the MGX 8220 addchan command is specified as service interworking (transparent or translation) and the connection end that is remote from the MGX 8220 is an ATM UNI.

FUNI and Frame Forwarding

These services are setup the same as Frame Relay except the for port_type in the addchan command, which is set as 2 for FUNI or 3 for frame forwarding.

 

 

Cisco MGX 8220 Installation and Configuration

 

 

 

 

 

 

 

Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003

 

 

5-5

 

 

 

 

 

Page 128 Page 130
Page 129
Image 129
Cisco Systems MGX 8220 Frsm Service Interworking Connections, Funi and Frame Forwarding, Parameter Description, Mcr, Pcr
Page 128 Page 130

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.
Top Page Image Contents