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Media message and fada

  • 14-12-2012 3:03am
    #1
    cathy01
    Registered Users, Registered Users 2 Posts: 2,269 ✭✭✭


    I was told today that if you send a txt with fada in it or symbol like%#+ it can be counted as a media message?? Anyone else think that's terrible?


Comments

  • #2
    GreenWolfe
    Registered Users, Registered Users 2 Posts: 1,731 ✭✭✭GreenWolfe


    This is due to the GSM 03.38/3GPP 23.038 specification:

    http://en.wikipedia.org/wiki/GSM_03.38#GSM_7_bit_default_alphabet_and_extension_table_of_3GPP_TS_23.038_.2F_GSM_03.38

    As far as I know - if a message uses a special character, it will use a different encoding instead of the 7-bit basic character set. This particular character set is used for GSM only. Each SMS is limited to 140 octets. So 160 of these basic characters can fit in 140 octets.*

    If a special character is inserted into an SMS, like { or ç, the message now uses an different encoding.

    If it's part of the basic extended set, it sends 2 7-bit chars: an escape followed by a 7 bit character. 80 characters fit in 140 octets.

    If it's any other character, it's encoded in UCS2. A UCS2 character is 16 bits. So, only 70 of these characters can fit into 140 octets.

    You could very easily send three messages instead of one -

    70
    70
    20 +
    160

    *An octet consists of 8 bits - 8 bits was not always a byte.


  • #3
    cathy01
    Registered Users, Registered Users 2 Posts: 2,269 ✭✭✭cathy01


    Really they should tell you that .where can I get a list if the symbols so I don't use them. Oh and OMG you know your stuff .


  • #4
    chrislad
    Registered Users, Registered Users 2 Posts: 8,324 ✭✭✭chrislad


    cathy01 wrote: »
    Really they should tell you that .where can I get a list if the symbols so I don't use them. Oh and OMG you know your stuff .

    Ah come on, that's like expecting a car salesman to tell you the internal workings of a combustion engine!


  • #5
    cathy01
    Registered Users, Registered Users 2 Posts: 2,269 ✭✭✭cathy01


    chrislad wrote: »
    Ah come on, that's like expecting a car salesman to tell you the internal workings of a combustion engine!

    Well they told me WHEN I ASKED.
    So they know , I think it would be nice if they told you.Thats all


  • #6
    GreenWolfe
    Registered Users, Registered Users 2 Posts: 1,731 ✭✭✭GreenWolfe


    cathy01 wrote: »
    Really they should tell you that .where can I get a list if the symbols so I don't use them. Oh and OMG you know your stuff .

    http://en.wikipedia.org/wiki/GSM_03.38#GSM_7_bit_default_alphabet_and_extension_table_of_3GPP_TS_23.038_.2F_GSM_03.38

    If you click this link you'll see two tables. The table on the left is the one you're interested in.


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  • #7
    chrislad
    Registered Users, Registered Users 2 Posts: 8,324 ✭✭✭chrislad


    cathy01 wrote: »
    Well they told me WHEN I ASKED.
    So they know , I think it would be nice if they told you.Thats all

    Caps lock got stuck there.


  • #8
    krudler
    Registered Users, Registered Users 2 Posts: 34,788 ✭✭✭✭krudler


    cathy01 wrote: »
    Well they told me WHEN I ASKED.
    So they know , I think it would be nice if they told you.Thats all

    you could spend all day in a phone shop if they had to tell you every little do and dont of a phone. Its an issue that rarely crops up


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