Sub-Rate TDM

Telephony and private line/leased line traffic are conventionally carried over connection-oriented synchronous or plesiochronous networks (which we will loosely refer to as TDM networks). With the proliferation of packet-switched networks (PSNs), there is a need to integrate TDM services into a unified PSN infrastructure. This integration requires emulation of TDM circuits within the PSN, a function that can be carried out using TDMoPSN technology (and its various subsets TDMoIP, TDMoMPLS, TDMoEthernet). This emulation must ensure Quality of Service and voice quality similar to those of existing TDM networks as well as preserving signalling features.

The protocol for tunnelling TDM traffic through PSNs must support n x 56/64 kbps, unstructured T1/E1, structured E1/T1 with and without Channel Associated Signalling (CAS), T3/E3 and TDM in AAL1 and AAL2 networks. The PSN layers supported by RAD’s technology include UDP over IPv4 or IPv6, MPLS, L2TPv3 over IP or pure Ethernet.

For reasons of simplification and consistency with previous versions of marketing nomenclature, RAD is using the generic name of TDMoIP to describe specific implementations of the technology.

TDM over IP (TDMoIP) technology, developed and pioneered by RAD, is an evolutionary approach for transporting circuit-switched telephony and legacy data (sync and async) over IP and Gigabit Ethernet networks.

TDMoIP transparently converts T1 or E1 circuits into IP packets for transmission over high performance IP-based backbones. It maintains all the features and functionality of today’s class 4 and 5 switches and SS7, PRI and other signalling protocols end-to-end across the network. The TDMoIP products deliver voice, fax, modem and data services over IP networks without compromising quality.

Converters & Repeaters

Cross Connects

Integrated Access Devices (IADs)

Inverse Multiplexers

Modem Racks

Modems

Multiplexers

Network Termination Units (NTUs)

Sharing Devices & Accessories

Voice Compression