Re: MMS Task Force

[Tim Kehres]

Pardon my ignorance, but what is MM7?   I assume it is some method of encoding objects such as SMS messages or other?   Regardless, you should think long and hard with respect to the use of SMTP as a common transport.   I'm working on a project here where we intend to link email, SMS, IM, and other applications together through a common framework.   SMTP is being considered, however it is not without it's drawbacks.   As far as the protocol itself, there are no issues here - it has to do with the way most MTA's are designed (including ours).  Most MTA's will attempt immediate delivery of a message once received, assuming they are configured to do so, but most also have backoff algorithms built in to throttle back when the loads get high.   A propogation delay of a couple of minutes, or say 5 - 10 is not unreasonable in this environment.     In addition, MTA's are basically store and forward systems, and most will cache to disk (queue) messages upon receipt, and then remove when transfer is complete.  In highly loaded systems this places disk i/o high on the list of system bottlenecks.   If you are trying to build real time applications on top of this infrastructure, depending on loads and your architecuture, this could pose problems.  While a 5 minute delay in getting an email message is not a big deal, a 5 minute delay in the propogation of an IM message is.   As a side issue, depending on the application, it may not be possible to encode information properly for transport via SMTP - IM presence information is one such example.   Best Regards,   Tim Kehres International Messaging Associates http://www.ima.com   ----- Original Message ----- From: Oded Arbel To: Alex Judd ; [EMAIL PROTECTED] Sent: Thursday, September 12, 2002 12:20 AM Subject: RE: MMS Task Force This is indeed very interesting, and I'd love to see full MMS support in Kannel. Unfortunatly, I don't know much about the current MMS infrastructure in Kannel. I understand that it uses wapbox, but over what bearer - sms through a normal SMSC ?   Can Kannel do MM7 over SMTP ?   -- Oded Arbel m-Wise mobile solutions [EMAIL PROTECTED]   +972-9-9581711 (116) +972-67-340014   ::.. People are like clouds all unique...   -----Original Message----- From: Alex Judd [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 11, 2002 5:04 PM To: [EMAIL PROTECTED] Subject: MMS Task Force Devel   I'd like to suggest that we put together a team of us to work on getting full MMS support into the CVS tree? I've reviewed the recent submissions from Vjacheslav Chekushin <[EMAIL PROTECTED]> which add SAR to the platform and from my limited reading they look fine (few programming opts. etc.) however we'll need to have a team of focused testers/fixers/developers to ensure it works 100%.   Stipe/Andreas/Oded - any of you guys interested?   Alex http://www.skywire.co.uk/