17th March 2006, 06:39 #1
Newbie level 6
SMS & MMS
How is SMS & MMS transmitted? Is it using GPRS, EDGE or some other technology?
How about video call?
17th March 2006, 06:39
17th March 2006, 13:57 #2
Full Member level 2
Re: SMS & MMS
SMS is essentially similar to paging, but SMS messages do not require the mobile phone to be active and within range, as they will be held for a number of days until the phone is active and within range. SMS messages are transmitted within the same cell or to anyone with roaming capability. Messages may be transmitted using an SMS gateway which is a web site that lets one enter an SMS message to someone within the cell served by that gateway or acts as an international gateway for users with roaming capability.
To use the Short Message Service, users need the relevant subscriptions and hardware, specifically:
* a subscription to a mobile telephone network that supports SMS; it should be connected to one of the GSM networks.
* SMS use enabled for that user (which is given by mobile network operators).
* a mobile phone that is SMS-enabled (which means that the device must have SMS technology built into it to access and utilize SMS).
* knowledge of how to send or read a short message using their specific model of mobile phone.
* a destination to send a short message to, or receive a message from. This is usually another mobile phone but may be a fax machine, PC or Internet address.
Presently, GSM allows for SMS messages to be sent from point-to-point, or in a cell-broadcast mode -
1. A point-to-point SMS message is where a user sends a message to another subscriber in their service. Once their message is sent, an acknowledgement of receipt is provided to the sender.
2. Cell*broadcast mode, or point-to-omnipoint, SMS messages are those such as traffic updates or news updates that are sent by services to multiple subscribed users within a given cell area.
what i believe is, MMS is transmitted over GPRS/EGPRS.
for more information. checkout the following links: