Multimedia Messaging Service

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MMS icon as it appears under an older version of Google Android Ic mms 48px.svg
MMS icon as it appears under an older version of Google Android

Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network. Users and providers may refer to such a message as a PXT, a picture message, or a multimedia message. [1] The MMS standard extends the core SMS (Short Message Service) capability, allowing the exchange of text messages greater than 160 characters in length. Unlike text-only SMS, MMS can deliver a variety of media, including up to forty seconds of video, one image, a slideshow [2] of multiple images, or audio.

Contents

Media companies have utilized MMS on a commercial basis as a method of delivering news and entertainment content, and retailers have deployed it as a tool for delivering scannable coupon codes, product images, videos, and other information. On (mainly) older devices, messages that start off with text, as SMS, are converted to and sent as an MMS when an emoji is added. [3] [4]

The commercial introduction of MMS started in March 2002, [1] although picture messaging had already been established in Japan. [5] It was built using the technology of SMS [2] as a captive technology which enabled service providers to "collect a fee every time anyone snaps a photo." [6] MMS was designed to be able to work on the then-new GPRS and 3G networks [7] and could be implemented through either a WAP-based or IP-based gateway. [8] The 3GPP and WAP Forum groups fostered the development of the MMS standard, which was then continued by the Open Mobile Alliance (OMA).

Technical description

MMS messages are delivered in a different way from SMS. The first step is for the sending device to encode the multimedia content in a fashion similar to sending a MIME message (MIME content formats are defined in the MMS Message Encapsulation specification). The message is then forwarded to the carrier's MMS store and forward server, known as the MMSC (Multimedia Messaging Service Centre). If the receiver is on a carrier different from the sender, then the MMSC acts as a relay, and forwards the message to the MMSC of the recipient's carrier using the Internet. [9]

Once the recipient's MMSC has received a message, it first determines whether the receiver's handset is "MMS capable" or not. If it supports the standards for receiving MMS, the content is extracted and sent to a temporary storage server with an HTTP front-end. An SMS "control message" containing the URL of the content is then sent to the recipient's handset to trigger the receiver's WAP browser to open and receive the content from the embedded URL. Several other messages are exchanged to indicate the status of the delivery attempt. [10] Before delivering content, some MMSCs also include a conversion service that will attempt to modify the multimedia content into a format suitable for the receiver. This is known as "content adaptation".

Older mobile phones, such as this Samsung D500, usually required the manual setting up of the MMS capability Samsung.Front.JPG
Older mobile phones, such as this Samsung D500, usually required the manual setting up of the MMS capability

If the receiver's handset is not MMS capable, the message is usually delivered to a web-based service from where the content can be viewed from a normal internet browser. The URL for the content is usually sent to the receiver's phone in a normal text message. This behavior is usually known as a "legacy experience" since content can still be received by the user.

The method for determining whether a handset is MMS capable is not specified by the standards. A database is usually maintained by the operator, and in it each mobile phone number is marked as being associated with a legacy handset or not. This method is unreliable, however, because customers can independently change their handsets, and many of these databases are not updated dynamically.

MMS does not utilize operator-maintained "data" plans to distribute multimedia content; they are used only if the user clicks links inside the message.

E-mail and web-based gateways to the MMS system are common. On the reception side, the content servers can typically receive service requests both from WAP and normal HTTP browsers, so delivery via the web is simple. For sending from external sources to handsets, most carriers allow a MIME encoded message to be sent to the receiver's phone number using a special e-mail address combining the recipient's public phone number and a special domain name, which is typically carrier-specific.

Challenges

There are some challenges with MMS that do not exist with SMS:

Handset configuration can cause problems sending and receiving MMS messages. Useless, useless, O2 (346988504).jpg
Handset configuration can cause problems sending and receiving MMS messages.

Although the standard does not specify a maximum size for a message, 300 kB and 600 kB are the recommended sizes used by networks [11] for compatibility with MMS 1.2 and MMS 1.3 devices respectively. The limit for the first generation of MMS was 50 kB. [8]

Interfaces

MMSC Reference Architecture MMSCNA.png
MMSC Reference Architecture

Usage, decline and discontinuation

Verizon launched its MMS service in July 2003. [12] Between 2010 and 2013, MMS traffic in the U.S. increased by 70% from 57 billion to 96 billion messages sent. [13] This is due in part to the wide adoption of smartphones. However take-up of MMS never matched the widespread popularity of SMS text messaging. [14]

Due to lower cost and improved functionality provided by modern internet-based instant messengers such as WhatsApp, Telegram, and Signal, MMS usage has declined, [15] and it has been discontinued by several telcos since the early 2020s. Countries with operators that have discontinued MMS include: India (BSNL; from 1 November 2015), [16] Philippines (Sun Cellular, Smart Communications, TNT; from 28 September 2018), [17] Singapore (Singtel, M1, Starhub; from 16 November 2021), [18] Kazakhstan (Kcell; from 6 May 2022), [19] Switzerland (Swisscom, Salt Mobile; from 10 January 2023), [20] [21] Germany (Vodafone; from 17 January 2023). [22]

RCS is intended to be the successor technology for MMS and SMS.

See also

Related Research Articles

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References

  1. 1 2 Le Bodic, Gwenaël (2005). Mobile Messaging Technologies and Services: SMS, EMS and MMS (2nd ed.). John Wiley & Sons. p. 208. ISBN   0-470-01143-2.
  2. 1 2 "The History of Multimedia Messaging (MMS) - MMS London". www.mmsworldlondon.com. Archived from the original on 2017-05-04. Retrieved 2016-12-27.
  3. ↑ "Emoticons in texts can rack up huge bills". BBC News. 2015-02-05. Retrieved 2024-07-01.
  4. ↑ "Stuff". www.stuff.co.nz. Retrieved 2024-07-01.
  5. ↑ Dodson, Sean (2003-07-03). "The real picture". The Guardian. ISSN   0261-3077 . Retrieved 2024-07-01.
  6. ↑ Parks, Bob (October 2000). "Wired Magazine, The Big Picture - Philippe Kahn". Wired. Archived from the original on 2006-03-26. Retrieved 2006-04-20.
  7. 1 2 Coulombe, Stéphane; Guido Grassel (July 2004). "Multimedia Adaptation for the Multimedia Messaging Service". IEEE Communications Magazine. 42 (7): 120–126. doi:10.1109/MCOM.2004.1316543. S2CID   4785100.
  8. 1 2 "MMS Developer's Guide" (PDF). Ericsson Mobility World USA. October 2001. Retrieved May 12, 2021.
  9. ↑ "Overview of MMS" Archived 2009-08-27 at the Wayback Machine , mbuni
  10. ↑ "Sending MMS Notifications and Content" Archived 2009-09-25 at the Wayback Machine , now.sms
  11. ↑ "MMS definition", GSM Arena
  12. ↑ "Verizon Wireless launches easy-to-use picture messaging service". www.verizon.com. 2003-07-08. Retrieved 2024-07-04.
  13. ↑ "CTIA's Annual Survey Says US Wireless Providers Handled 3.2 Trillion Megabytes of Data Traffic in 2013 for a 120 Percent Increase Over 2012". www.ctia.org. Archived from the original on 2014-07-23. Retrieved 2014-07-29.
  14. ↑ https://www.theregister.com/2018/05/07/what_is_rich_communication_services/ [ bare URL ]
  15. ↑ https://www.theregister.com/2016/05/20/three_uk_mms_tarriffs/ [ bare URL ]
  16. ↑ "BSNL to shutdown MMS from November 1 - Times of India". The Times of India. 30 October 2015.
  17. ↑ "Smart, Sun to discontinue MMS by September » YugaTech - Philippines Tech News & Reviews". 23 August 2018.
  18. ↑ "Farewell, MMS: Messaging service set to end after mid-November - The Straits Times". The Straits Times. 6 September 2021.
  19. ↑ "Kcell stops MMS service - Telecompaper".
  20. ↑ "Goodbye MMS: Swisscom to phase out MMS service ... - Swisscom Community".
  21. ↑ "Salt. - MMS Discontinuation".
  22. ↑ "Vodafone switches off the MMS - January 04, 2023 - MarketScreener". 5 January 2023.
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