where & How DTMF details in my contact details used?
Q. Hi, In my N73, i see that I can add "DTMF" details to each contact. I would like to know where and how this DTMF info is used? I understand DTMF is used for identifing which key was pressed, please tell me some use cases. Thanks, San
Asked by San - Mon Dec 17 03:36:25 2007 - - 1 Answers - 0 Comments
A. You are right, DTMF (Dual-tone multi-frequency ) is used on touch tome phones to identify the key pressed, one tone for "vertical" column, another tone for "horizontal" row. Your (Nokia) N73 has a feature which allows you to store a series of such tones, representing key strokes. Now why would you need that...? I give you a few examples: a) You always (say) call different numbers in ShenZhen China, and you are "too lazy" to always dial 011 86 755 before the actual number. You can store that sequence. b) You control your home security system over the phone from anywhere. After you call the dial-in number, you need to enter a password, and then you enter another sequence which turns on your driveway lights. You can store those key… [cont.]
Answered by Marianna - Mon Dec 17 09:58:53 2007
Q. Hi, In my N73, i see that I can add "DTMF" details to each contact. I would like to know where and how this DTMF info is used? I understand DTMF is used for identifing which key was pressed, please tell me some use cases. Thanks, San
Asked by San - Mon Dec 17 03:36:25 2007 - - 1 Answers - 0 Comments
A. You are right, DTMF (Dual-tone multi-frequency ) is used on touch tome phones to identify the key pressed, one tone for "vertical" column, another tone for "horizontal" row. Your (Nokia) N73 has a feature which allows you to store a series of such tones, representing key strokes. Now why would you need that...? I give you a few examples: a) You always (say) call different numbers in ShenZhen China, and you are "too lazy" to always dial 011 86 755 before the actual number. You can store that sequence. b) You control your home security system over the phone from anywhere. After you call the dial-in number, you need to enter a password, and then you enter another sequence which turns on your driveway lights. You can store those key… [cont.]
Answered by Marianna - Mon Dec 17 09:58:53 2007
My phone has FSK and in India it has to have DTMF to get caller ID. What do I do?
Q. In India the land line telephones ought to have DTMF to get caller ID's.My phone purchased in USA has FSK.
Asked by Kumaran R - Tue May 30 00:23:01 2006 - - 1 Answers - 0 Comments
A. Interesting that they aren't compatible, but then again, in telecom, USA usually doesn't follow anyone. There isn't any easy conversion to do. Designing such a circuit is a real pain, not something I would attempt unless I had a spare month or so to waste. You will have to sell / give your phone to someone going to USA, and buy a new one made for India's standard. I am curious, do you know the name of the standard in India?
Answered by Hansi - Wed May 31 00:34:19 2006
Q. In India the land line telephones ought to have DTMF to get caller ID's.My phone purchased in USA has FSK.
Asked by Kumaran R - Tue May 30 00:23:01 2006 - - 1 Answers - 0 Comments
A. Interesting that they aren't compatible, but then again, in telecom, USA usually doesn't follow anyone. There isn't any easy conversion to do. Designing such a circuit is a real pain, not something I would attempt unless I had a spare month or so to waste. You will have to sell / give your phone to someone going to USA, and buy a new one made for India's standard. I am curious, do you know the name of the standard in India?
Answered by Hansi - Wed May 31 00:34:19 2006
How does a DTMF converter works?
Q. I have to use something to convert mobile signals into electrical pulse so that I can command a robot to move from my cell phone itself. will a DTMF converter be good?
Asked by SHWETA - Sat Jul 18 03:19:21 2009 - - 1 Answers - 0 Comments
A. Too hard to do it that way. Try Google "telephone x10 control" or The whole thing is already built for you.
Answered by unknown - Sat Jul 18 04:09:58 2009
Q. I have to use something to convert mobile signals into electrical pulse so that I can command a robot to move from my cell phone itself. will a DTMF converter be good?
Asked by SHWETA - Sat Jul 18 03:19:21 2009 - - 1 Answers - 0 Comments
A. Too hard to do it that way. Try Google "telephone x10 control" or The whole thing is already built for you.
Answered by unknown - Sat Jul 18 04:09:58 2009
how do i encode a digital signal into DTMF?
Q. i'm currently working on a dial alarm for a college project. i'm storing a phone number in a microcontroller (89c51 or a pic) and dialling that number. i currently have a CM8880 chip, but i don't know the circuit which encodes digital input into DTMF. could someone please help me out here? i have the data sheet but its not of too much use :(
Asked by g-man - Mon Apr 21 10:46:50 2008 - - 1 Answers - 0 Comments
A. First link in google: Skimming the document it appears to show you absolutely everything you need.
Answered by west6cor - Mon Apr 21 19:36:09 2008
Q. i'm currently working on a dial alarm for a college project. i'm storing a phone number in a microcontroller (89c51 or a pic) and dialling that number. i currently have a CM8880 chip, but i don't know the circuit which encodes digital input into DTMF. could someone please help me out here? i have the data sheet but its not of too much use :(
Asked by g-man - Mon Apr 21 10:46:50 2008 - - 1 Answers - 0 Comments
A. First link in google: Skimming the document it appears to show you absolutely everything you need.
Answered by west6cor - Mon Apr 21 19:36:09 2008
can any one give me circuit of dtmf remote controlled home appliances?
Q. can any one give me circuit of dtmf remote controlled home appliances?
Asked by prasnna_87 - Wed Feb 13 10:56:53 2008 - - 2 Answers - 0 Comments
A. Dual Tone Multi Frequency controlled devices are very out of date since the digital age has entered. Digital has been the choice used for over 30 years. Leave the DTMF to the telephone circuits While I can't think of any home apliances, DTMF is still used in validating bank cards on ATMs -tcw
Answered by JD7 - Wed Feb 13 11:04:05 2008
Q. can any one give me circuit of dtmf remote controlled home appliances?
Asked by prasnna_87 - Wed Feb 13 10:56:53 2008 - - 2 Answers - 0 Comments
A. Dual Tone Multi Frequency controlled devices are very out of date since the digital age has entered. Digital has been the choice used for over 30 years. Leave the DTMF to the telephone circuits While I can't think of any home apliances, DTMF is still used in validating bank cards on ATMs -tcw
Answered by JD7 - Wed Feb 13 11:04:05 2008
what is a DTMF on a cell phone?
Q. my phone gives me the options of sending DTMF what is this?
Asked by th3 83@t k!773r - Sat Dec 27 21:24:56 2008 - - 2 Answers - 0 Comments
A. sending "touch Tones". DTMF is Dual Tone - Multi Frequency or... Touch Tone
Answered by BobB - Sat Dec 27 21:28:55 2008
Q. my phone gives me the options of sending DTMF what is this?
Asked by th3 83@t k!773r - Sat Dec 27 21:24:56 2008 - - 2 Answers - 0 Comments
A. sending "touch Tones". DTMF is Dual Tone - Multi Frequency or... Touch Tone
Answered by BobB - Sat Dec 27 21:28:55 2008
Computer can't read my kingston usb DTMF flash drive, why?
Q. I have a desktop and a laptop that both run Windows XP home edition with service pack 2. My laptop recognized my Kingston usb flash drive as soon as i plugged it it, but my desktop wont recognize it nor list it in my comp!! I've tried a bunch of stuff but i don't know why!!! Does anybody know what's happening?
Asked by sabnvr - Sat Sep 8 16:44:19 2007 - - 2 Answers - 0 Comments
A. Does it go IN all the way? Does it light up? (did it on the laptop?) Try a different port. You see, the USB ports in the front of many desktops just don't have the room around the USB plug to allow some devices to be plugged in. I've seen this with Compaq, Dell and HP. Try one of the ports in the BACK, since there is no cover that gets in the way. Good luck and Happy Computing!
Answered by danuitti - Sat Sep 8 16:50:14 2007
Q. I have a desktop and a laptop that both run Windows XP home edition with service pack 2. My laptop recognized my Kingston usb flash drive as soon as i plugged it it, but my desktop wont recognize it nor list it in my comp!! I've tried a bunch of stuff but i don't know why!!! Does anybody know what's happening?
Asked by sabnvr - Sat Sep 8 16:44:19 2007 - - 2 Answers - 0 Comments
A. Does it go IN all the way? Does it light up? (did it on the laptop?) Try a different port. You see, the USB ports in the front of many desktops just don't have the room around the USB plug to allow some devices to be plugged in. I've seen this with Compaq, Dell and HP. Try one of the ports in the BACK, since there is no cover that gets in the way. Good luck and Happy Computing!
Answered by danuitti - Sat Sep 8 16:50:14 2007
Is there a manual for a Whelen E-747-2, 8 digit DTMF encoder available?
Q. Is there a manual for a Whelen E-747-2, 8 digit DTMF encoder available?
Asked by unknown - Tue Jul 7 16:04:23 2009 - - 1 Answers - 0 Comments
A. The Whelen E-747 is an alarm panel. The firm does not produce a device labelled E-747-2
Answered by Peter H - Tue Jul 7 17:20:20 2009
Q. Is there a manual for a Whelen E-747-2, 8 digit DTMF encoder available?
Asked by unknown - Tue Jul 7 16:04:23 2009 - - 1 Answers - 0 Comments
A. The Whelen E-747 is an alarm panel. The firm does not produce a device labelled E-747-2
Answered by Peter H - Tue Jul 7 17:20:20 2009
Which is the modem that can detect the dtmf caller ID transmitted by bsnl?
Q. My bsnl telephone comapny uses the DTMF tones to transmit caller ID. The answer given by the gentleman points to the fsk tones transmitted by USA and Canada and other companies. I want a modem that can detect DTMF tones.
Asked by PNS - Wed Mar 14 07:11:58 2007 - - 1 Answers - 0 Comments
A. For most MODEMs, the string AT#CID=1 or AT+VCID=1will enable Caller ID. Other common setup strings are: AT#CID=2 AT%CCID=1 AT%CCID=2 AT#CC1 AT*ID1 some modems with caller id support.
Answered by Zlavzilla - Fri Mar 16 10:58:00 2007
Q. My bsnl telephone comapny uses the DTMF tones to transmit caller ID. The answer given by the gentleman points to the fsk tones transmitted by USA and Canada and other companies. I want a modem that can detect DTMF tones.
Asked by PNS - Wed Mar 14 07:11:58 2007 - - 1 Answers - 0 Comments
A. For most MODEMs, the string AT#CID=1 or AT+VCID=1will enable Caller ID. Other common setup strings are: AT#CID=2 AT%CCID=1 AT%CCID=2 AT#CC1 AT*ID1 some modems with caller id support.
Answered by Zlavzilla - Fri Mar 16 10:58:00 2007
if i call from one number to anothere number.. how the it varify the dialed mumber...?..how the dtmf flow....?
Q. i want to know how DTMF tone flows...what is the architecture...to flow dtmf degit
Asked by bunty - Mon Nov 19 06:43:15 2007 - - 1 Answers - 0 Comments
A. digital read out
Answered by rlptexas - Mon Nov 19 11:15:18 2007
Q. i want to know how DTMF tone flows...what is the architecture...to flow dtmf degit
Asked by bunty - Mon Nov 19 06:43:15 2007 - - 1 Answers - 0 Comments
A. digital read out
Answered by rlptexas - Mon Nov 19 11:15:18 2007
Where can I find dtmf to fsk converter in India?
Q. Where can I find dtmf to fsk converter in India?
Asked by PNS - Wed Mar 14 07:10:45 2007 - - 2 Answers - 2 Comments
A. What exactly are you trying to do? How would you convert DTMF to FSK? FSK in Baudot code or what? I've never heard of anyone converting touchtone signaling to frequency shift keying. Not knowing what the application is, I think you could make something work with a sound card interface. Others have had no problems writing modules which encode and decode DTMF signaling, and the same goes for FSK and I've seen speeds up to 9k6 using a sound card interface although I can't imagine any touchtone signalling requiring that high of a bit rate.
Answered by Geoff S - Wed Mar 14 14:31:44 2007
Q. Where can I find dtmf to fsk converter in India?
Asked by PNS - Wed Mar 14 07:10:45 2007 - - 2 Answers - 2 Comments
A. What exactly are you trying to do? How would you convert DTMF to FSK? FSK in Baudot code or what? I've never heard of anyone converting touchtone signaling to frequency shift keying. Not knowing what the application is, I think you could make something work with a sound card interface. Others have had no problems writing modules which encode and decode DTMF signaling, and the same goes for FSK and I've seen speeds up to 9k6 using a sound card interface although I can't imagine any touchtone signalling requiring that high of a bit rate.
Answered by Geoff S - Wed Mar 14 14:31:44 2007
What is DTMF? What is its goal?
Q. i got an option DTMF in my mobile i wanna know what does it do...what benifits or disadvantage i have using it...
Asked by Mr Myth - Sat May 23 10:56:22 2009 - - 2 Answers - 0 Comments
A. Dual Tone Multi Frequency it is the touch tone sounds... the option is likely short or long... you can normally leave it set to short, but if you notice when you dial into an automated system that your touch tones are not being sent properly, then you can set it to long... other options that I have seen on cell phones is the option to allow DTMF tones to be sent in call or not... if you enable this you will be able to send touch tone signals after making a call (to check voice mail, call an automated system, etc) if you disable this the phone will ignore and not send any touch tone signals while in call... if this is the option you are talking about on your phone, then I would leave it enabled...
Answered by joe r - Sun May 24 22:40:11 2009
Q. i got an option DTMF in my mobile i wanna know what does it do...what benifits or disadvantage i have using it...
Asked by Mr Myth - Sat May 23 10:56:22 2009 - - 2 Answers - 0 Comments
A. Dual Tone Multi Frequency it is the touch tone sounds... the option is likely short or long... you can normally leave it set to short, but if you notice when you dial into an automated system that your touch tones are not being sent properly, then you can set it to long... other options that I have seen on cell phones is the option to allow DTMF tones to be sent in call or not... if you enable this you will be able to send touch tone signals after making a call (to check voice mail, call an automated system, etc) if you disable this the phone will ignore and not send any touch tone signals while in call... if this is the option you are talking about on your phone, then I would leave it enabled...
Answered by joe r - Sun May 24 22:40:11 2009
visual basic 6 sending tones (not dtmf) with mscomm control?
Q. I want to use the mscomm control to send tones of 950Hz, 1400Hz, and 1800Hz, sent in that order. Each segment is allowed a duration of 330 70 ms with a silent interval of up to 30 ms between. Whoever sends me the code/instructions for that will immediately get "best answer" for 10pts thank you
Asked by infowealthopp - Tue Feb 19 19:31:15 2008 - - 1 Answers - 0 Comments
Q. I want to use the mscomm control to send tones of 950Hz, 1400Hz, and 1800Hz, sent in that order. Each segment is allowed a duration of 330 70 ms with a silent interval of up to 30 ms between. Whoever sends me the code/instructions for that will immediately get "best answer" for 10pts thank you
Asked by infowealthopp - Tue Feb 19 19:31:15 2008 - - 1 Answers - 0 Comments
How can I send DTMF string during call to ACD of Alcatel OmniPCX 4400 release 5.1?
Q. I need send 12 char string to ACD during call procedure
Asked by iGUR - Sun Dec 17 15:33:53 2006 - - 1 Answers - 0 Comments
A. I bet you already have one of these: ACDs are usually programmed to ignore digits after the number of allowed digits have been entered. Such as after 11 for example. You should know that. What are you trying to do hack into a PBX?
Answered by Paper Man - Sun Dec 17 15:44:06 2006
Q. I need send 12 char string to ACD during call procedure
Asked by iGUR - Sun Dec 17 15:33:53 2006 - - 1 Answers - 0 Comments
A. I bet you already have one of these: ACDs are usually programmed to ignore digits after the number of allowed digits have been entered. Such as after 11 for example. You should know that. What are you trying to do hack into a PBX?
Answered by Paper Man - Sun Dec 17 15:44:06 2006
what is a dtmf on a mobile phone?
Q. what is a dtmf on a mobile phone?
Asked by eric - Sun Jan 11 10:43:57 2009 - - 2 Answers - 0 Comments
A. Also known as: Dual Tone Multi-Frequency Dual Tone Multi-Frequency (DTMF), also known as 'Touchtone', is the type of signalling now used by all modern telephony equipment. DTMF is the name given to the system of audible tones generated by a user when dialling numbers on a telephone, and DTMF phones usually have 12 keys (i.e. the ten decimal digits plus the symbols '#' and '*'). Each phone key generates a different pair of audible frequencies - one high and one low frequency, so that they cannot be imitated by a voice - which explains the term 'Dual Tone'. At the exchange or receiving equipment these tones are then decoded, to determine which keys had been pressed. In addition to their use for dialling, these tones are also used to… [cont.]
Answered by Joyful97 - Sun Jan 11 10:50:00 2009
Q. what is a dtmf on a mobile phone?
Asked by eric - Sun Jan 11 10:43:57 2009 - - 2 Answers - 0 Comments
A. Also known as: Dual Tone Multi-Frequency Dual Tone Multi-Frequency (DTMF), also known as 'Touchtone', is the type of signalling now used by all modern telephony equipment. DTMF is the name given to the system of audible tones generated by a user when dialling numbers on a telephone, and DTMF phones usually have 12 keys (i.e. the ten decimal digits plus the symbols '#' and '*'). Each phone key generates a different pair of audible frequencies - one high and one low frequency, so that they cannot be imitated by a voice - which explains the term 'Dual Tone'. At the exchange or receiving equipment these tones are then decoded, to determine which keys had been pressed. In addition to their use for dialling, these tones are also used to… [cont.]
Answered by Joyful97 - Sun Jan 11 10:50:00 2009
what is a dtmf?
Q. got a text msg asking me what a DTMF is, but i doubt its computer hard were, New Slag maybe?
Asked by marine120032002 - Sun Jan 29 15:37:03 2006 - - 4 Answers - 0 Comments
A. It is Dual Tone MultiFrequency, also known as a Touch Tone. The tones generated by touching the keys on the phone are used for a variety of purposes including voice mail systems and voice messaging. when u call an automated service and a voice responds "press 1 for menu, 2 for operator", ur key press signal is transmitted because of DTMF.
Answered by nouman203 - Sun Jan 29 16:12:14 2006
Q. got a text msg asking me what a DTMF is, but i doubt its computer hard were, New Slag maybe?
Asked by marine120032002 - Sun Jan 29 15:37:03 2006 - - 4 Answers - 0 Comments
A. It is Dual Tone MultiFrequency, also known as a Touch Tone. The tones generated by touching the keys on the phone are used for a variety of purposes including voice mail systems and voice messaging. when u call an automated service and a voice responds "press 1 for menu, 2 for operator", ur key press signal is transmitted because of DTMF.
Answered by nouman203 - Sun Jan 29 16:12:14 2006
DTMF tones?
Q. Whats the difference between Inband and Outband DTMF?
Asked by HITMAN 25 - Thu Nov 1 08:19:45 2007 - - 1 Answers - 0 Comments
A. Inband means that the tone is transmitted in the audio stream. Sometimes that means blocking voice to send the tone or it may mean mixing the tone into the existing voice stream. Outband means sending telephone keypad tones in any manner except in the voice channel. This often means that an IP phone or multimedia client sends a tone message using a signaling protocol. If this message can reach all the way to the listener, the listening device can generate that tone at their end or simply know that that key was "pressed". If the tone "message" has to go through something like a PSTN gateway (to the public phone network), the gateway has to decode the voice channel, generate the specified tone, blend the two together, then encode the… [cont.]
Answered by Truly W - Thu Nov 1 16:12:41 2007
Q. Whats the difference between Inband and Outband DTMF?
Asked by HITMAN 25 - Thu Nov 1 08:19:45 2007 - - 1 Answers - 0 Comments
A. Inband means that the tone is transmitted in the audio stream. Sometimes that means blocking voice to send the tone or it may mean mixing the tone into the existing voice stream. Outband means sending telephone keypad tones in any manner except in the voice channel. This often means that an IP phone or multimedia client sends a tone message using a signaling protocol. If this message can reach all the way to the listener, the listening device can generate that tone at their end or simply know that that key was "pressed". If the tone "message" has to go through something like a PSTN gateway (to the public phone network), the gateway has to decode the voice channel, generate the specified tone, blend the two together, then encode the… [cont.]
Answered by Truly W - Thu Nov 1 16:12:41 2007
dtmf option in mobile phone?
Q. what is the dtmf option in mobile.it appears while we make a call.it asks to send some numbers.what is the use of it?can we do something extraordinary with it?how to use the option.plz reply thanks a lot
Asked by u_make_my_life_better - Tue Nov 18 09:09:02 2008 - - 1 Answers - 0 Comments
A. It sends the caller the number e.g. when they say press option 3, you can do this through DTMF - never used because you can just press the number in normally anyway :)
Answered by SkEgY - Tue Nov 18 09:22:32 2008
Q. what is the dtmf option in mobile.it appears while we make a call.it asks to send some numbers.what is the use of it?can we do something extraordinary with it?how to use the option.plz reply thanks a lot
Asked by u_make_my_life_better - Tue Nov 18 09:09:02 2008 - - 1 Answers - 0 Comments
A. It sends the caller the number e.g. when they say press option 3, you can do this through DTMF - never used because you can just press the number in normally anyway :)
Answered by SkEgY - Tue Nov 18 09:22:32 2008
DTMF downloading call on my cell phone!!?
Q. Can anyone help me clear up what is going on here??? First of all, I'm a Realtor so I always answer my phone because many clients call from Private and Unavailable numbers. I just switched over mobile plans from Alltel to Verizon and recieved a new plan and a new phone (Alias phone). For the last couple of weeks I've been receiving calls from a PRIVATE number and when I answer, nobody answers but the VERIZON logo comes across the screen and it reads "downloading dtmf" and a music/tone logo appears. The calls are becoming more and more frequent (4-5 times day at all hours of the day) and if I don't answer, the PRIVATE number will immediately call again. Does anyone have any ideas? Again, I need my phone for business! I've contacted… [cont.]
Asked by Libby - Wed Aug 19 15:25:13 2009 - - 1 Answers - 0 Comments
A. i heard of this happenning before with our phones... come to find out a fax machine was trying to fax something. Since the cell phone is partially a mini computer too, it was trying to interprute the fax signal. LOL no charges here either, just annoyed the customer to the point she changed her phone number. Your phone does have the ability to block all Private calls... however, since your customers also have private numbers, they will be blocked as well... I'm sorry. You can change your number. Tell Verizon the situation and they should waive the number change fee... we do on "harrassing calls--hint" good luck LOL
Answered by Angel - Wed Aug 19 15:32:15 2009
Q. Can anyone help me clear up what is going on here??? First of all, I'm a Realtor so I always answer my phone because many clients call from Private and Unavailable numbers. I just switched over mobile plans from Alltel to Verizon and recieved a new plan and a new phone (Alias phone). For the last couple of weeks I've been receiving calls from a PRIVATE number and when I answer, nobody answers but the VERIZON logo comes across the screen and it reads "downloading dtmf" and a music/tone logo appears. The calls are becoming more and more frequent (4-5 times day at all hours of the day) and if I don't answer, the PRIVATE number will immediately call again. Does anyone have any ideas? Again, I need my phone for business! I've contacted… [cont.]
Asked by Libby - Wed Aug 19 15:25:13 2009 - - 1 Answers - 0 Comments
A. i heard of this happenning before with our phones... come to find out a fax machine was trying to fax something. Since the cell phone is partially a mini computer too, it was trying to interprute the fax signal. LOL no charges here either, just annoyed the customer to the point she changed her phone number. Your phone does have the ability to block all Private calls... however, since your customers also have private numbers, they will be blocked as well... I'm sorry. You can change your number. Tell Verizon the situation and they should waive the number change fee... we do on "harrassing calls--hint" good luck LOL
Answered by Angel - Wed Aug 19 15:32:15 2009
What is DTMF exactly??
Q. I know it has something to do with keypads
Asked by Mike S. - Thu Dec 4 20:22:05 2008 - - 2 Answers - 0 Comments
A. Yes, key tones Wiki:
Q. I know it has something to do with keypads
Asked by Mike S. - Thu Dec 4 20:22:05 2008 - - 2 Answers - 0 Comments
A. Yes, key tones Wiki:
From Yahoo Answer Search: 'DTMF'
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Liz has been using the internet since before it was cool, she recalls fondly whistling DTMF tones down the old spaghetti cans, string and 900 Baud modems. ...
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DTMF Remote control with software DTMF decoder for PIC 16F87X Posted on 22 Feb 2008 This project is a simple DTMF Remote control The DTMF detector is integrated in software All the logic requested to receive and decode DTMF Commands over the phone line is integrated in the
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Leeladisky
Fri, 04 Sep 2009 05:43:30 GM
folks - yesterday i installed and then uninstalled the virtual keyboard and the active desktop apps for the pre... today i have no . dtmf. tones when i dial the phone... instead, i get short vibrations. while cool for when i need silence, ...
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