Copper Mountain Optimizes Voice Over DSL

Digital Subscriber Line equipment developer Copper Mountain Networks Inc.
Tuesday introduced an innovative technology designed to improve Voice-over
Internet Protocol efficiency.

Dubbed Adaptive Fragmentation, Copper Mountain’s
concentrators reduce jitter and latency VoIP at the point of Symmetric and
ISDN DSL customer premise equipment (CPE).

By minimizing the overhead in DSL networks, carriers using Adaptive
Fragmentation increase the number of voice and data services that can be
provisioned over each link, while retaining high bandwidth efficiency and
ensuring consistent
toll-quality voice services.

Jitter is inherent to VoIP because Asynchronous Transfer Mode (ATM)
switches naturally segment data frames into short,
fixed-length cells regardless of the voice or data traffic mix. Copper
Mountain’s Adaptive Fragmentation allows greater bandwidth efficiency than
non-adaptive frame fragmentation or ATM systems because it does not
break-up the packets.

It’s smart technology because Copper Mountain Networks and its
CopperCompatible CPE partnership program performs
fragmentation only when voice traffic is present, and only to the extent
needed to meet voice delay tolerances.

Rick Gilbert, Copper Mountain president and chief executive officer said
the company is continually developing innovations that make DSL networks
more efficiently.

“Better voice quality, reduced overhead, and more efficient voice and data
service translate into competitive advantage and greater profits for our
carrier customers,” Gilbert said.

Scott Bradner, Harvard University senior technical
consultant, said Copper Mountain’s VoIP optimization is a big advancement
toward attaining toll-quality telephony services.

“This is a clever means of optimizing the tradeoffs between minimizing
jitter, latency, and overhead when providing packet-based voice service,”
Bradner said. “Automatically fragmenting non-real-time data when real-time
data is present optimizes the best of both worlds.”

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