TDMA
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Posts: n/a Re: TDMA Typing TDMA into Google brings this up (as well as hundreds of others):http://www.webopedia.com/TERM/T/TDMA.html Time Division Multiple Access From:Sarge sarge43@ev1.net > What does TDMA mean?
Posts: n/a Re: TDMA "BruceR" <br@hawaii.com> wrote in message news:bcY6f.2842$QM5.1829@tornado.socal.rr.com... > Typing TDMA into Google brings this up (as well as hundreds of others): > http://www.webopedia.com/TERM/T/TDMA.html > Time Division Multiple Access > > From:Sarge > sarge43@ev1.net > >> What does TDMA mean? dang never thought about google, sorry. Mainly I'm wondering if I get my daughte-in-law a phone that says TDMA can she put her sim card in and use it. Both er card and the phone are ATT.
Posts: n/a Re: TDMA "BruceR" <br@hawaii.com> wrote in message news:bcY6f.2842$QM5.1829@tornado.socal.rr.com... > Typing TDMA into Google brings this up (as well as hundreds of others): > http://www.webopedia.com/TERM/T/TDMA.html > Time Division Multiple Access > > From:Sarge > sarge43@ev1.net > >> What does TDMA mean? dang never thought about google, sorry. Mainly I'm wondering if I get my daughte-in-law a phone that says TDMA can she put her sim card in and use it. Both er card and the phone are ATT.
Posts: n/a Re: TDMA No. The AT&T TDMA phones are an older generation and do not use a SIM asthey're not GSM. What you want is a GSM phone. From:Sarge sarge43@ev1.net > "BruceR" <br@hawaii.com> wrote in message > news:bcY6f.2842$QM5.1829@tornado.socal.rr.com... >> Typing TDMA into Google brings this up (as well as hundreds of >> others): http://www.webopedia.com/TERM/T/TDMA.html >> Time Division Multiple Access >> >> From:Sarge >> sarge43@ev1.net >> >>> What does TDMA mean? > > dang never thought about google, sorry. Mainly I'm wondering if I get > my daughte-in-law a phone that says TDMA can she put her sim card in > and use it. Both er card and the phone are ATT.
Posts: n/a Re: TDMA No. The AT&T TDMA phones are an older generation and do not use a SIM asthey're not GSM. What you want is a GSM phone. From:Sarge sarge43@ev1.net > "BruceR" <br@hawaii.com> wrote in message > news:bcY6f.2842$QM5.1829@tornado.socal.rr.com... >> Typing TDMA into Google brings this up (as well as hundreds of >> others): http://www.webopedia.com/TERM/T/TDMA.html >> Time Division Multiple Access >> >> From:Sarge >> sarge43@ev1.net >> >>> What does TDMA mean? > > dang never thought about google, sorry. Mainly I'm wondering if I get > my daughte-in-law a phone that says TDMA can she put her sim card in > and use it. Both er card and the phone are ATT.
Posts: n/a Re: TDMA "BruceR" <br@hawaii.com> wrote in message news:3yY6f.2225$Jo3.895@tornado.socal.rr.com... > No. The AT&T TDMA phones are an older generation and do not use a SIM as > they're not GSM. What you want is a GSM phone. > Thank you very much! Good thing I asked some folks who know. LOL!
Posts: n/a Re: TDMA "BruceR" <br@hawaii.com> wrote in message news:3yY6f.2225$Jo3.895@tornado.socal.rr.com... > No. The AT&T TDMA phones are an older generation and do not use a SIM as > they're not GSM. What you want is a GSM phone. > Thank you very much! Good thing I asked some folks who know. LOL!
Posts: n/a Re: TDMA On Sun, 23 Oct 2005 22:02:17 -0500, "Sarge" <sarge43@ev1.net> wrote:>What does TDMA mean? > Time Division Multiple Access. In D-AMPS/IS-136 (which is what many call TDMA service in the USA), and GSM, each channel is subdivided into time slots, and each user on the channel is assigned a time slot to transmit into, or receive from. At any other time, the channel is either empty, or used by someone else. In order to insure that transmissions arrive with the assigned slot (which is only about 600 microseconds wide), GSM phones have a feature called timing advance which adjust the transmit timing according to distance from the Base. This is where range limit comes from in GSM, unless you are willing to sacrafice the adjoining time slot (and in Rural Australia, some actually do, but it reduces the channel capacity from 8 calls to 4 calls). I believe there are only 3 channels in D-AMPS/IS-136, and they are much much wider than they are in GSM (IIRC, about 25 millseconds), so timing is much less of an issue. The other benefit is the transmit rate is generally below what most sound equipment will reliably reproduce, so interference from D-AMPS/IS-136 is uncommon, whereas just about everyone who uses GSM equipment has heard the 217 hz buzz;;;
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