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Broadcom IP phone chip integrates power detection

Posted: 18 Mar 2002 ?? ?Print Version ?Bookmark and Share

Keywords:broadcom? ip phone? internet protocol phone? voip? voice over ip?

The BCM1101 IP phone chip integrates a power detection functionality, enabling IP phones to be powered through the same UTP cable for Ethernet data. This eliminates the need for external wall-mounted power supplies for each IP phone connected to the network.

The power detection capability is compatible with Cisco System's Inline Power-enabled switches, allowing the BCM1101 to be deployed in Cisco network infrastructures.

"The deployment of enterprise IP phones has become one of the most successful uses of VoIP to date. We foresee accelerated growth in this market over the next several years, to the point where we expect IP phones to be more common than PBX phones by 2005," said Paul Shore, Broadcom's director of marketing for VoIP client products.

Fully-compliant with the IEEE 802.3 standard, the BCM1101 is the successor of the BCM1100 chip, and features an enhanced 150MHz MIPS32 RISC processor that enables more processing-intensive computer telephony integration (CTI) applications.

The chip has an integrated Ethernet switch that allows the PC and IP phone to share a single LAN connection, and supports IEEE 802.1p packet prioritization and 802.1Q VLAN identification. Also integrated into the BCM1101 are two UARTs, GPIO, and three analog codecs capable of supporting both narrowband (8kHz) and wideband (16kHz) sampling.

The company claims that the codecs' sampling rates, together with wideband vocoding, will allow IP phone networks to deliver a higher fidelity voice transmission than PBXs or PSTNs.

The BCM1101 is packaged in a 256 PBGA housing and can withstand 2kV of CESD. Power consumption is placed at 1.1W during operation and 0.8W during standby.

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