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Telecom Network for Professionals and Users
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Why don't we hear dial-tone in mobile phones?Views: 609
Apr 30, 2007 10:02 amWhy don't we hear dial-tone in mobile phones?#

Anil Gurwara
Hey people...

Why don't we hear dial-tone in mobile phones where as in case of PSTN / Land line phones as soon as it goes off-hook we get to hear dial-tone.
Any clues/pointers?

Thanks in Advance!

Cheers
-Anil

Private Reply to Anil Gurwara

May 03, 2007 5:02 pmre: Why don't we hear dial-tone in mobile phones?#

John T
Dial tone is an indiginous characteristic from the Ma Bell Circuit Switch days. What your hearing the electrical noise from the "off hook" action which is the engagement of an actual dedicated electrical circuit loop you just created by picking up the ear.mouth piece [going off hook].

Mobile communications' evolutionary technology is derived from a distinctly different genetic pool, radio wave/frequency, mobile phones are more related to HAM radios than the landline telephone, except we don't say "roger" and "over and out" when we're speaking .... Instead we say" hello? can you hear me now?"

Private Reply to John T

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