TDM Pseudowire Access Gateway

RAD's IPmux-14 is a TDM pseudowire gateway and an Ethernet-based access device, extending TDM services over Ethernet, MPLS and IP networks. Incorporating standard TDMoIP pseudowire technology, the IPmux-14 TDM access gateway transparently delivers E1/T1, serial and Ethernet traffic over packet-switched transport.

 

In addition to E1/T1 extension and serial data communications, the IPmux-14 is primarily used in cellular backhaul applications, guaranteeing 2G/3G service delivery over PSN with high precision clock recovery attributes.

• Enables legacy service continuity over packet switched networks

• Reduces OpEx by minimizing the number of leased lines required for network support

• Supports legacy PBX, including proprietary features and signaling

• Supports TDM service performance requirements by ensuring low latency and minimizing packet loss and jitter

• Enables migration of cellular services to next-generation networks by allowing delivery of 2G/3G traffic over packet transport

• Supports standard TDMoIP pseudowire technology

The IPmux-14 gateway converts TDM user traffic data streams from the E1/T1 or serial ports into IP packets or MPLS frames for transmission over the packet-switched network (PSN), via a 10Mbps or 100Mbps Ethernet uplink. Another pseudowire gateway at the remote site converts the packets back to TDM traffic. Employing TDMoIP standard pseudowire format, the IPmux-14 takes advantage of new IP/Ethernet/MPLS networks to deliver TDM-based voice, fax, modem, and data services without compromising traditional PSTN quality.

IPmux-14 offers integrated, Layer 2-based access for TDM and Ethernet services. Enabling transparent bridging between the user LAN and the Ethernet WAN, user traffic can be rate-limited, tagged and filtered (based on VLAN classification), while double VLAN tagging (VLAN stacking) can be applied to better engineer the network and allow a granular bandwidth offering.

The IPmux-14 TDMoIP gateway supports the following features:

• E1/T1 or serial data connectivity for any user device with standard E1/T1 or V.35/V.36/RS-530/RS-422/RS-232 interface

• Alarm detection with error statistics

• SES/UAS statistics, LOS/AIS physical layer alarms and remote/local loop tests.

 

The device supports standard E1/T1 alarms from end-to-end.

RAD’s IPmux-14 gateway is designed to meet the requirements of small customer premises sites. It reduces operating expenses by delivering virtually all TDM, data and LAN services over IP/Ethernet/MPLS networks, while ensuring strict priority for the TDMoIP traffic over the network link. End users continue to receive all familiar services, while carriers and service providers maintain revenues from legacy services. The compact size, ease of installation and support for multiple legacy and next generation Ethernet and IP-based services, make the IPmux-14 ideal for small and medium-sized enterprises (SMEs).

 

IPmux-14 serves the growing need of business customers for transparent LAN services (TLS), such as LAN-to-LAN interconnection and Ethernet connectivity to service providers. Enhanced features, such as user LAN port rate limiting, enable adaptation bandwidth to fit required capacity. VLAN stacking allows the encapsulation of multiple VLANs over a single network media for efficient network engineering.

 

The IPmux-14/A version is designed for deployment at base station sites for cellular backhaul over IP/Ethernet applications. The high precision clock recovery capability guarantees the smooth operation of both 2G and 3G cellular equipment when connected over a PSN. Compact, 1U-high unit size permits coexistence with other communications gear at sites where space is limited.

IPmux-14 is equipped with the following interfaces:

• One, two or four standard E1/T1 user ports

• Serial data port with various interface options: V.35, V.36, RS-530, RS-422, and RS-232

• Two Ethernet ports with optional 10/100BaseT or 100BaseFx interface serve as network uplinks or user ports

• One Ethernet user port with 10/100BaseT interface for LAN connectivity

• Optional external clock port (E1/T1 rate)