| Watch the SIP Gotchas
Two more "gotchas" for SIP trunking adoption: Lack of usable fax services and E-911. Fax over IP has always been the thorn in the side of VOIP. While standards such as the International Telecommunications Union T.38 enable fax over IP between IP enabled fax machines and PSTN gateways, support for fax has not yet materialized in the SIP trunking market. Even though fax volumes continue to decline,... Explore SIP Compression Options
Sizing SIP trunks is a challenge. IT architects tell Nemertes that as a rule, they budget 80 kbps per trunk to account for additional IP overhead for VOIP. In a one-for-one replacement of TDM PSTN trunks with SIP trunks, bandwidth costs for SIP trunking actually exceeded TDM costs due to the additional overhead required for SIP compared with 64 Kbps channels for TDM voice. Growing use of high-quality... Securing SIP
SIP trunking raises a few security concerns that IT planners must address. SIP trunking creates a new vector for attacking enterprise phone systems. In most VOIP architectures the PSTN serves as a firebreak between the enterprise phone system and the rest of the world. Risk of attack from the Internet is low as the VOIP system is physically and potentially logically isolated from the outside. Introducing... Listen up: Rock and roll artifacts under surveillance
IP-based video surveillance technology keeps a digital eye on gear from the likes of John Lennon and Mick Jagger that's on display at the Rock & Roll Hall of Fame Annex in New York City. AMF bowls for customers with video sharing over managed IP
AMF Bowling Centers Inc. is wrapping up the roll-out of a $2 million nationwide network equipment upgrade that supports Voice over IP (VoIP) and video streaming, and includes turning over all network management to Verizon Business for three more years. November giveaways
Cisco Subnet is giving away free books on VMware vSphere security. Microsoft Subnet is giving away training from New Horizons and free books on Exchange Server 2010. Google Subnet is giving away free books on Android app development. Entry forms can be found on the main contest page. Trivia answers are revealed on each main Subnet page. Network World on Twitter? You bet we are | 
Inside planes, trains, cars and spaceships, Ethernet is a morph master. Here's a look at some of Ethernet's cooler implementations.
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