TranSwitch (News - Alert), a provider of semiconductor solutions for voice, data and video communications, has announced that Loop Telecom will be utilizing its EtherMap-PDH devices in their next generation access platform to enable Ethernet over Plesiochronous Digital Hierarchy (PDH) infrastructure.

 

The TranSwitch EtherMap-PDH is based on the latest ITU-T Standards G.8040, G.7043 and G.7042 for Generic Framing Procedure (GFP), Virtual Concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS), respectively.

 

Company officials said that these standards enable the same framing, concatenation and capacity management schemes incorporated in TranSwitch’s EoS product family to be extended for PDH network applications.

 

“The support of PPP/HDLC and the field-proven LCAS functionality in the EtherMap-PDH device was critical for our Loop IP6416 platform,” said Joe Lau, vice president at Loop Telecom.

 

He further explained that the Loop IP6416 supports the automatic E1/T1 channel failure detection feature in which if one of the E1s failed, the remaining bandwidth of 15 E1s would seamlessly adjust to sustain the traffic, this would result in a minimal loss of traffic.

 

“In addition, the ability to provide built-in test pattern and remote E1 loopback functionality while in the VCAT-mode is of tremendous value to a Service Provider, especially during the System Line-up and Test (SLAT) of the service,” said Lau.

 

The Loop-IP6416 IP Inverse Multiplexer / Media Converter enables Service Providers to offer Ethernet services over any existing copper, optical or microwave infrastructure carrying E1 or T1 circuits.

 

Loop Telecom officials said that up to 16 E1 or T1 circuits can be concatenated to form a single channel over which the Ethernet traffic is carried, providing customers up to 32 Mb/s of network bandwidth.

 

EtherMap-PDH comes with features such as GFP packet header correction and LCAS hitless restoration to provide packet transport, resulting in fewer dropped packets and greater overall throughput.

 

TranSwitch officials said that with the help of EtherMap-PDH device, OEMs can extend the life-span of their existing platform by developing a universal PDH Service Card while reusing the backplane and chassis.

 

Moreover, the PDH interfaces (E1/T1/J1 and DS3) can work in independent or protected mode, which is said to make it suitable for a variety of applications such as wireless base stations, Ethernet switch/routers and MSPP platforms.