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  2. User Data Header - Wikipedia

    en.wikipedia.org/wiki/User_Data_Header

    UDH uses space intended for the message payload. The longer the UDH, the less space remains for the message text or other contents. When TP-UD contains seven-bit data, the length of TP-UD is given in septets (but UDHL is still in octets, so length in septets is (UDHL + 1) * 8 / 7) and the UDH is filled to a septet boundary with 0-6 zero bits.

  3. GSM 03.40 - Wikipedia

    en.wikipedia.org/wiki/GSM_03.40

    GSM 03.40 or 3GPP TS 23.040 is a mobile telephony standard describing the format of the Transfer Protocol Data Units (TPDU) part of the Short Message Transfer Protocol (SM-TP) used in the GSM networks to carry Short Messages. [1]

  4. UDH - Wikipedia

    en.wikipedia.org/wiki/UDH

    User Data Header, a binary structure at the start of some short messages in cell phones Universal derailleur hanger , a standard for attaching rear derailleurs on bicycles Medicine and biology

  5. Concatenated SMS - Wikipedia

    en.wikipedia.org/wiki/Concatenated_SMS

    In technical terms, the concatenated SMS could also be referred to as a PDU Mode SMS [dubious – discuss].The number of parts that a multi-part or PDU mode SMS message may contain depends technically upon a header message but mostly upon the device sending or receiving the SMS and also upon the service provider.

  6. Data Coding Scheme - Wikipedia

    en.wikipedia.org/wiki/Data_Coding_Scheme

    Data Coding Scheme is a one-octet field in Short Messages (SM) and Cell Broadcast Messages (CB) which carries a basic information how the recipient handset should process the received message. The information includes: the character set or message coding, which determines the encoding of the message user data

  7. Use full headers to find delivery delays or a forged email's ...

    help.aol.com/articles/use-full-headers-to-find...

    An email's full headers include information about how it was routed and delivered as well as information about the true sender of the email. View the full headers to find out where an email was delayed or who really sent an email with a forged address. View an email's full header. 1. Sign in to your AOL Mail account. 2. Click on an email to ...

  8. GPRS Tunnelling Protocol - Wikipedia

    en.wikipedia.org/wiki/GPRS_Tunnelling_Protocol

    The user data transported can be packets in any of IPv4, IPv6, or PPP formats. GTP' ( GTP prime ) uses the same message structure as GTP-C and GTP-U, but has an independent function. It can be used for carrying charging data from the charging data function (CDF) of the GSM or UMTS network to the charging gateway function (CGF).

  9. Find delivery delays or identify the sender in AOL Mail

    help.aol.com/articles/use-full-headers-to-find...

    An email’s full headers include info about how it was routed and delivered and the true sender of the email. View the full headers to find out where an email was delayed or if the real sender disguised their email address. View the full header of an email. 1. Click an email to open it. 2. Click the More drop-down in the top menu. 3.