Pdvt Jitter Buffer, Ethernet Throughput

Chapter 1 Introduction	IPmux-1/1EInstallation and Operation Manual

Packets Leaving IPmux-1 t

Packets Arriving

PDV

Figure 1-18. Packet Delay Variation

PDVT (Jitter) Buffer

IPmux-1 is equipped with a Packet DVT (Delay Variation Tolerance) buffer. The PDVT buffer or jitter buffer is filled by the incoming IP packets and emptied out to fill the E1/T1 stream. The buffer begins to empty out only after it is half full in order to compensate for packet starvation from the Ethernet side. The time it takes for half of the buffer to empty out is the maximum DVT time. Delay Variation Tolerance is configurable. The PDVT (jitter) buffer is designed to compensate for packet delay variation caused by the network + intrinsic PDV.

It supports a delay variation of up to 300 ms for E1 or T1.

➤To configure jitter buffer depth:

Estimated or Measured PDV introduced by the network + intrinsic PDV (if it exists) introduced by the module as a result of configuring the

TDM bytes / frame > 48 (see explanation of calculating intrinsic PDV, below).

Intrinsic PDV

If TDM bytes/frame is greater than 48, there is an intrinsic delay variation (intrinsic PDV). The intrinsic PDV introduced by the module is a function of n>1 in TDM bytes/frame configuration as follows:

I.PDV (ms) = [(n-1) x 1000) / (frames per second ⋅ n]

where n =	Configured TDM bytes/frame	(n = 1 to 8).
	48

Note For a bundle that contains a few timeslots (i.e. 1–3) the minimal jitter buffer should be 6 ms.

PDVT Buffer Effect on Delay

The PDVT buffer is on the TDM path; it adds to the total end-to-end delay (see delay calculation, below).

Ethernet Throughput

Configuring the TDM bytes per frame (TDM bytes/frame) parameter can reduce Ethernet throughput (bandwidth or traffic travelling through the Ethernet). This parameter controls the number of TDM bytes encapsulated in one frame. The TDM bytes/frame parameter can be configured to n x 48 bytes where n is an

1-20	Functional Description

Order from: Cutter Networks

Ph:727-398-5252/Fax:727-397-9610

www.bestdatasource.com

IPmux-1E, IPmux-1 specifications

RAD Data Comm is a renowned manufacturer known for its high-quality communication solutions, and among its notable offerings are the IPmux-1 and IPmux-1E devices. These compact and versatile products are designed for efficient network integration and data transport over various mediums including IP-based networks.

The IPmux-1 is a powerful multiplexer that enables the transmission of multiple channels of voice, data, and even fax over a single IP link. It supports various protocols such as E1, T1, and V.35, making it an ideal solution for businesses looking to optimize their existing infrastructure while upgrading to more modern technologies. The device is also equipped with advanced features such as payload compression and error correction, which ensure high-quality performance even over less reliable networks.

On the other hand, the IPmux-1E is an enhanced version of the original device, featuring additional capabilities that extend its flexibility and functionality. This model supports a higher density of channels and offers advanced management and monitoring tools that provide users with detailed insights into network performance. The IPmux-1E is particularly beneficial for service providers and enterprises that require a more robust solution capable of handling greater bandwidth and multiple service types across a single platform.

Both IPmux models utilize advanced packet-processing technology, facilitating seamless data encapsulation and reducing latency, which is critical in today’s fast-paced digital environment. They are designed to easily integrate with existing infrastructure, allowing organizations to transition smoothly to a more modern telecommunications framework without the need for significant investment in new hardware.

Key characteristics of the IPmux-1 and IPmux-1E include their reliability, low power consumption, and rugged design suitable for deployment in various locations. Their modular architecture offers users the flexibility to scale their systems according to evolving needs.

In summary, RAD Data Comm's IPmux-1 and IPmux-1E devices provide an excellent solution for organizations seeking to consolidate their voice and data services into a single network infrastructure. With their advanced features, support for various protocols, and robust performance, they are well-suited for both enterprise and service provider applications, ensuring efficient communication and data management in today's increasingly connected world.

RAD Data comm IPmux-1E operation manual Pdvt Jitter Buffer, Ethernet Throughput, Intrinsic PDV

Models: IPmux-1E IPmux-1