View Source: ShortMessageService - Waikato Linux Users Group

Edit PageHistory Diff Info LikePages

ShortMessageService ([SMS]) is the transmission of short text messages to and from a mobile phone, fax machine and/or IP address. Messages must be no longer than 160 alpha-numeric characters and contain no images or graphics.

Once a message is sent, it is received by a ShortMessageService Center (SMSC), which must then get it to the appropriate mobile device.


To do this, the SMSC sends a [SMS] Request to the home location register (HLR) to find the roaming customer. Once the HLR receives the request, it will respond to the SMSC with the subscriber's status: 1) inactive or active 2) where subscriber is roaming.


If the response is "inactive", then the SMSC will hold onto the message for a period of time. When the subscriber accesses his device, the HLR sends a [SMS] Notification to the SMSC, and the SMSC will attempt delivery.

Compare [MMS].

One page links to ShortMessageService:

Last edited on Wednesday, March 16, 2005 11:43:39 am by CraigBox

Edit PageHistory Diff Info LikePages