AT commands

hi dears is there any command that modem realize when the phone is picked up on the same line.modem and phone ,both are on the same line, for example your home,when the modem is ringing,i pick up the phone and modem realize it... thnx friends

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koorosh01
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You should check your modem's manual, but I've never seen a modem that measures DC tip-ring voltage and can tell you whether another set has gone off-hook. AFAIK, modem network interfaces are almost always AC-coupled and can't detect DC voltage.

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Grant
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Grant Edwards

Am Tue, 26 Aug 2008 15:40:02 -0700 schrieb koorosh01:

No, there isn't such a command. And a modem won't never detect a situation where another modem has already taken the call. When you tell the modem to go off-hook it will and may disturb another running connection on the same phone line.

So the only solution is to develop a scheme where calls are multiplexed by using different time slots or use a modem as a fallback (the line is picked after 3 rings by modem A, modem B waits 7 rings and takes the call then because there obviously is a fault in modem A). Such schemes work very well.

Vitus

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Vitus Jensen, Hannover, Germany, Earth, Milky Way, Universe (current)
Reply to
Vitus Jensen

There are no such commands . But, there are tools/softwares that make this possible.

Karthik Balaguru

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karthikbalaguru

l

Interesting technique !!

Karthik Balaguru

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karthikbalaguru

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