(1) (Session Initiation Protocol) An IP telephony signaling protocol developed by the IETF. Primarily used for voice over IP (VoIP) calls, SIP can also be used for video or any media type; for example, SIP has been used to set up multi-player Quake games. With SIMPLE extensions for IM and presence, SIP is also used for instant messaging (see SIMPLE).
SIP is a text-based protocol that is based on HTTP and MIME, which makes it suitable and very flexible for integrated voice-data applications. SIP is designed for real time transmission, uses fewer resources and is considerably less complex than H.323. Its addressing scheme uses URLs and is human readable; for example: sip:john.doe@company.com.
SIP relies on the session description protocol (SDP) for session description and the real time transport protocol (RTP) for actual transport (see RTP and SDP). Windows XP was the first version of Windows to natively support SIP for PC-based phone applications, and numerous vendors make SIP desktop phones. See SIP proxy.
(2) (SiP) (System in Package) A complete system packaged in one housing. A SiP contains several ICs (chips) including a microprocessor on a single substrate such as ceramic or laminate. A SiP is really a multichip module (MCM) that contains all the parts of a complete system. The SiP term was first used by Amkor Technology in the late 1990s and not trademarked in order to encourage its use worldwide. See SoC and MCM.
System In Package
This cross section of a SiP shows a microprocessor (µP), SRAM and flash memory chips packaged together in the same housing. The L,R,C stands for inductor, resistor, capacitor. (Image courtesy of Amkor Technology, Inc.)
SIP is a text-based protocol that is based on HTTP and MIME, which makes it suitable and very flexible for integrated voice-data applications. SIP is designed for real time transmission, uses fewer resources and is considerably less complex than H.323. Its addressing scheme uses URLs and is human readable; for example: sip:john.doe@company.com.
SIP relies on the session description protocol (SDP) for session description and the real time transport protocol (RTP) for actual transport (see RTP and SDP). Windows XP was the first version of Windows to natively support SIP for PC-based phone applications, and numerous vendors make SIP desktop phones. See SIP proxy.
(2) (SiP) (System in Package) A complete system packaged in one housing. A SiP contains several ICs (chips) including a microprocessor on a single substrate such as ceramic or laminate. A SiP is really a multichip module (MCM) that contains all the parts of a complete system. The SiP term was first used by Amkor Technology in the late 1990s and not trademarked in order to encourage its use worldwide. See SoC and MCM.
System In Package
This cross section of a SiP shows a microprocessor (µP), SRAM and flash memory chips packaged together in the same housing. The L,R,C stands for inductor, resistor, capacitor. (Image courtesy of Amkor Technology, Inc.)
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- MAX SIP ActiveX (exe)
- VoIP SDK to accelerate development of any type of VoIP-enabled application, like a SIP soft phone, teaching tool, live support, meeting tool or any other type of application which requires users being able to talk to each other. Deliver SIP-based communications and services for PC-to-Phone, Phone- to-PC and PC-to-PC services...
- Software downloads 2008-06-30
- Nokia rolls out over-the-air firmware updates with the N78 release
- Nokia rolls out over-the-air firmware updates with the N78 releaseIz Nice"and even just connected via my T-Mobile EDGE connection."Yep. I use my N95 with Asterisk PBX at home and remotely as a phone extension over an AT&T data bearer plan.My better half Wifey reaches me by dialing a 4-digit...
- Discussion threads 2008-06-25
- What works, what doesn't
- What works, what doesn'tYou forgot an important pointThat is, once any software base finally stabilizes, force an upgrade to a new super shiny alpha implementation down everybody's throats. This is called the bullsiht baffles brains scenario.Rough figures that I've come across are that 80% of people aren't really capable of...
- Discussion threads 2008-06-24
- I am Batman
- I am Batmanre: I am BatmanIf I understand this correctly... they'll pay for your Phone usage but not your data, correct? First off, I'd say that's odd in this day and age. Usually I see that companies pay for Both or None.In any case, it sounds like you're...
- Discussion threads 2008-06-23
- 3CX Phone System for Windows (exe)
- 3CX VOIP Phone System for Windows Free edition is an Office Phone System/IP PBX that completely replaces a proprietary PBX, supports standard SIP soft/hard phones from any vendor, VOIP service providers & traditional PSTN phone lines. Developed for Windows, it is easy to install, configure & manage via web-based config....
- Software downloads 2008-06-18
- Apple announces iPhone 3G; firmware 2.0
- Apple announces iPhone 3G; firmware 2.03G iPhoneIf I upgrade from my current iPhone to the new 3G iPhone, what happens to my current EDGE iPhone? Can I still use it as a video iPod if there is no SIM card in it? And access email and the...
- Discussion threads 2008-06-09
- 50 questions asked and answered on Android
- At the very end of the Google I/O 2008 conference last week the Android development team hosted a great fireside chat on the new mobile platform. The session was free-form, completely driven by questions from the audience. Although Google was trying to keep mum on a number of issues, several...
- Blog posts 2008-06-05
- Are these applications worth jailbreaking your current Apple iPhone?
- I have a jailbroken Apple iPhone and have a few applications loaded on it, but am always on the lookout for recommendations on applications to try. It is likely that we will see the new 3G iPhone announced and/or launched next week along with the firmware 2.0 upgrade so we...
- Blog posts 2008-06-04
- Philips 42PFL5603D
- At the Consumer Electronics Show this year we selected the Philips 42PFL5603D as the best product overall because it addressed one big issue with today's flat-panel HDTVs: power consumption. Now that we've tested the "Eco TV," we can confirm that it does indeed use less power than any flat TV...
- Product reviews 2008-05-30
- Microsoft's grand plan to eliminate phone numbers
- Microsoft's grand plan to eliminate phone numbersYeah. Sure.Right after we get the paperless office, flying car & the long-promised 3-day work week.Google has GrandCentral for contacting user's various phone numbersGoogle has GrandCentral something kind of along these lines with making multiple contacts but to the different phone numbers that one...
- Discussion threads 2008-05-29
- Nokia N95-3 (North American model) firmware update version 20.2.011 is now available
- Nokia N95-3 North American model firmware update version 20.2.011 is now availableGood Lord. Get help! kiddingYou are as bad as I am when it comes to the N95.Bet you haven't done this:Set up Asterisk and your N95 as a remote SIP phone extension.OK, so you have T-Mobile@Home. ;)
- Discussion threads 2008-05-27
- The company people want Microsoft to be
- The recent announcements regarding Microsoft's plans to include native support for ODF and PDF as part of Office 2007 SP2 was certainly unexpected. They had just managed to get OXML ratified by ISO, a move that was clearly aimed to counter a format that had benefited from its decision to...
- Blog posts 2008-05-23
- iCenter? Wishing, not predicting
- iCenter? Wishing, not predictingAsteriskAsterisk, of course, with a little bit of intestinal fortitude can be configured for the home and I might add, I have it configured for my IT consultancy to have my Nokia N95 SIP-cable cell phone answer as a remote extension from 'anywhere'. No cellphone plan minutes...
- Discussion threads 2008-05-21
- Apple under pressure to fix Safari 'carpet bomb' flaw
- Apple under pressure to fix Safari 'carpet bomb' flawThe problem with this one isIt's too easy. Anyone can read the PoC and figure out how to conduct a full blown attack quite simply. If you fit the pieces together, it's directly attackable.-NateRE: Apple under pressure to fix Safari...
- Discussion threads 2008-05-20
- News to know: XP meets XO; Yahoo; Facebook; Verdiem; DIY phishing
- Notable headlines: Mary Jo Foley: It's finally official: XP is coming to the XO. Christopher Dawson: Sugar-free Windows, as predicted Microsoft cuts backup from Windows Home Server PowerPack Larry Dignan: Icahn launches Yahoo proxy fight; Mark Cuban's return?...
- Blog posts 2008-05-16
- Sennheiser HD 600
- When Steve Guttenberg reviewed the Sennheiser HD 650 headphones, he rightfully called them "fit for a king"--while noting that they retail for a correspondingly princely sum of $500. Thankfully, the HD 650s aren't the only model in Sennheiser's high-end audiophile line. The Sennheiser HD 600s can be bought at a...
- Product reviews 2008-05-13
- Dialcom: Web Conferencing that Works
- I've complained about all of the things wrong with the way folk use Web conferencing. Now let me tell you about a web conference that went off well. A few weeks ago I chatted with a Spanish company looking to launch in the US. Dialcom (not...
- Blog posts 2008-05-02
- Is Apple going back to the PowerPC?
- Hardware independence as a strategic weapon The Forbes magazine scoop that Apple is buying P. A. Semiconductor, a Silicon Valley company that designs high-performance, power-sipping PowerPC chips - the very chips Apple just migrated away from - raises a host of questions. But the people who need to worry...
- Blog posts 2008-04-23
- Siemens vs. Microsoft: Round Two
- Siemens announced today two new UC-enabled Contact Center packages based on OpenScape UC Server, and a new Voice Portal solution. The products will be available June 30, 2008. The products are being driven in part by trends in the contact center and in part by trends...
- Blog posts 2008-04-21
- What Microsoft's Been Missing from its Small Business Telephony Play
- Microsoft announced today that it was teaming up with Cbeyond, Inc., and New Global Telecom, Inc. NGT, to combine their digital voice services with Response Point, Microsoft's specification for small offices PBXs. ResponsePoint systems are distinguished by a blue button on the handset. Pressing the button...
- Blog posts 2008-04-18
Neighboring Terms
Premier Vendor Content Whitepapers, webcasts & resources from our Power Center Sponsors
- Which solar technology will survive?
-
At the Cleantech Forum in San Francisco, Todd Glass of Heller Ehrman moderates a discussion, among tech execs, on the various solar technologies making a difference in the green movement.
- Watch the video >>
- View exclusive resources for Intel Premier IT Professionals
-
Designed specifically to address the concerns of senior IT managers at organizations with more than 100 employees, the Intel Premier IT Professional Program provides best practices via local and e-Seminars and a members-only Web site.
- Sign-up free and access best practices resources >>
- The Cisco Mobility Resource Center is your source for FREE mobility solutions
-
The Cisco Mobility Resource Center offers FREE videos, downloads, podcasts and more, all designed to help small and medium businesses get mobile connectivity solutions, improve productivity and drive sales and revenue.
- New mobility solutions at the Cisco Mobility Resource Center
The Green Enterprise
-
- A look into the enterprise to explore eco-friendly practices and innovations. In this ZDNet video series learn about what's motivating green tech, and how green technologies are impacting IT. 0:42
-
Harnessing the power of waves
3:13
-
Planting solar gardens
5:06
-
Fill your car for $1.10 a gallon?
1:43
- All series videos »
