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  2. Frame synchronization - Wikipedia

    en.wikipedia.org/wiki/Frame_synchronization

    The search can be sequential (only consider one starting point at a time), or multiple candidate starting points may be considered at once. Advanced techniques continue searching even while synchronization is established, so that, if synchronization is lost, by the time the loss is noticed a new frame start position has been found. [2]

  3. Time and frequency transfer - Wikipedia

    en.wikipedia.org/wiki/Time_and_frequency_transfer

    In a one-way time transfer system, one end transmits its current time over some communication channel to one or more receivers. [4]: 116 The receivers will, at reception, decode the message, and either just report the time, or adjust a local clock which can provide hold-over time reports in between the reception of messages. The advantage of ...

  4. Time-division multiple access - Wikipedia

    en.wikipedia.org/wiki/Time-division_multiple_access

    Time-division multiple access (TDMA) is a channel access method for shared-medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots. [1] The users transmit in rapid succession, one after the other, each using its own time slot.

  5. Mobile number portability - Wikipedia

    en.wikipedia.org/wiki/Mobile_number_portability

    Before 2009 it was 30–60 days to transfer number, now just 1 day [59] Estonia: 2005.01.01 7 Finland: 2003.07.25 5 Free Handled by the company Numpac [60] France: 2003.06.30 3 Free Heavily improved since November 2011 with a 3-days maximum lead time (was taking 2 months in most cases before 2007, then 10 days) [61] Georgia: 2011.01.01 Free

  6. Call forwarding - Wikipedia

    en.wikipedia.org/wiki/Call_forwarding

    Call forwarding, or call diversion, is a telephony feature of all telephone switching systems which redirects a telephone call to another destination, which may be, for example, a mobile or another telephone number where the desired called party is available.

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. More than a third of teens say they spend too much time on ...

    www.aol.com/more-third-teens-spend-too-164804753...

    The always-online generation may be starting to unplug a bit. Around 40% of teenagers say they have cut back on their time on social media, according to a report published Monday by the Pew ...

  9. Transmission time - Wikipedia

    en.wikipedia.org/wiki/Transmission_time

    The round-trip time or ping time is the time from the start of the transmission from the sending node until a response (for example an ACK packet or ping ICMP response) is received at the same node. It is affected by packet delivery time as well as the data processing delay , which depends on the load on the responding node.