SIP…MSN Messenger vs. Windows Messenger

It all comes down to SIP. What is SIP? Session Initiation Protocol.
It’s interesting that you’re able to actually write your own client if you please using the Microsoft toolkit for working with the RTC (Real Time Client) API. RTC is defined to be synonymous of VoIP in someways, providing presence information, allowing users to make PC-PC calls as well as PC-Phone calls. I’m mostly stoked about it because it’s the differentiator between MSN and Windows Messenger.
So what’s this mean to you? Well, if you’re connected to a network that uses SIP, you’re stuck using Windows Messenger as MSN Messenger has no support for it. But there are alternatives… I present to you the SIP plugin for Trillian Pro. It’s pretty sweet and works marvelously well, plus it allows you to keep client side history of your conversations — one of the most annoying things with Windows Messenger is that it doesn’t allow for history to be kept unless it’s turned on at the server level. So people like the author of the SIP plugin for Trillian CC have taken it upon themselves to create something using the RTC API that allows us to use alternative software to connect to a SIP server.
Anyone know of any other programs out there that allow for client side history or plugins of any type that conform to the SIP RTC parameters?

[Listening to: Nothing but the Blood – Matt Redman – Facedown (6:36)]
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One thought on “SIP…MSN Messenger vs. Windows Messenger

  1. Yay! SIP! I work with that all day here at work. Our Nursing Home phone system uses SIP. The phones use 802.11b and a server sits on the network listening for calls. The fun part about SIP is that even though it’s a standard protocol, everyone has their own implementation of it. So, we have to have an extra box on the network that translates Intel’s version of SIP to our phone vendor’s version of SIP.

    I think there’s a SIP app for Linux that’s like a software phone. Can’t remember what it’s called…

    But in theory, if you grab an 802.11b phone and set up a Linux VoIP PBX gateway, you can make free VoIP calls to anyone with a VoIP phone or client app (or to POTS if you can use a VoIP to analog gateway). Fun stuff!

    I remember in college using a service that let you make free phone calls to anyone on the analog side. They even gave me a free headset (this was during the .com boom). So, I would call my parents using this service cuz I was too cheap to call long distance (had to save my money for beer). The service was pretty crappy, but it did the job.

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