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By Richard Grigonis
"Zippy" |
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• SIP and IMS
By Richard "Zippy" Grigonis |
| SIP (Session Initiation Protocol) and IMS (IP Multimedia Subsystem) are huge topics these days, the subjects of endless discussion. SIP defeated its rival, H.323, in the call control signaling area for IP Communications, but it was the harbinger of more grandiose things to come — namely, the grandiose IMS architecture, which is based on SIP and started out as a small part of the 3G wireless world. |
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• Integration of SIP & SS7 for VoIP: Opportunities and Challenges
By James P. Rafferty |
| There is strong momentum in the telecom industry as carriers make the shifts to providing voice and other services over an emerging SIP network infrastructure. However, there is a large class of customers whose phones are circuit-based and a tremendous amount of existing circuit-switched infrastructure that will be in the carrier networks for years to come. |
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• SIP Development Tools
By Richard “Zippy” Grigonis |
| SIP has become the premier the call control/signaling protocol for IP Communications, unseating its predecessor, H.323. Developing products that rely on SIP is less difficult than with H.323, and working with SIP code, while not a walk in the park, is nevertheless relatively straightforward compared to other types of protocols. |
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• SIP Test Tools
By Chris Bajorek |
| Editor’s Note: Developing and deploying SIP applications and services demands superlative testing tools for proof-of-concept, load, security and interoperability testing. Professional testing labs are obviously treasure troves of such technology, so we decided to take a peek into one of the best known of such labs, CT Labs of Rocklin, California, an independent operating unit of Empirix, headed by long-time testing guru Chris Bajorek. In this article, Bajorek takes us on a guided tour of his tool collection. |
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• Leading Edge Provider Seeks Leading Edge Solution
By Erik Linask |
| Quilogy is a professional services company based in St. Charles, Missouri, and a Microsoft Gold partner. In addition to five buildings in St. Charles, its some 250 employees are scattered among 13 other cities across the Western half of the United States. |
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