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Old November 16th, 2009, 03:39 PM   #1 (permalink)
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Default Read this to improve call sound quality!!!

t's in the Programming menu. Use the Programming Menu at your own risk. There are options/settings in this menu that should not be manipulated. That's my disclaimer
On your dialpad dial ##PROGRAMthen press SEND

The SPC password is 000000

Now you should be at the Programming Menu. From the list press "04 Vocode"

Now you can select 13k, EVRC (default option), or EVRC-B

After you select one, back out to your home screen and your phone will reset.

That's it.

Keep in mind, I don't really understand why EVRC-B isn't already the default option on this phone. There may be a good reason. There may not. Hopefully someone from Verizon or Motorola will chime-in and answer my original post.

Enhanced Variable Rate Codec - Wikipedia, the free encyclopedia

Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia


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Old November 16th, 2009, 04:17 PM   #2 (permalink)
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Tested this, worked great. I thought call quality was already pretty good, seemed possibly slightly better. My bro on the other end confirmed I sounded crystal clear with 8-10 people talking behind me in my office.

I was bummed that my phone had to be rebooted just short of 200 hours of uptime, but I'll get back there eventually, wanna see how long it will stay on without being a pain.
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Old November 16th, 2009, 06:59 PM   #3 (permalink)
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I saw this hack on another board followed by lots of cases where it caused phones to totally stop working -- wouldn't boot, wouldn't reset, just died.

Tried to find that other board/post, but now I can't. Sorry.
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Old November 16th, 2009, 07:36 PM   #4 (permalink)
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Quote:
Originally Posted by KirkS View Post
I saw this hack on another board followed by lots of cases where it caused phones to totally stop working -- wouldn't boot, wouldn't reset, just died.

Tried to find that other board/post, but now I can't. Sorry.
hmmmm i think i'll wait for more reviews haha
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Old November 16th, 2009, 09:26 PM   #5 (permalink)
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I did this and my sound quality sounds waaaaaaaaaaay better. Also found this info on the moto forum.
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Old November 17th, 2009, 02:17 AM   #6 (permalink)
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Wow! The sound quality of "EVRC-B" is very noticeable.
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Old November 17th, 2009, 03:56 AM   #7 (permalink)
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Keep my eye on this one
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Old November 19th, 2009, 01:53 PM   #8 (permalink)
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I tried the change but I still sound crappy...
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Old November 19th, 2009, 11:57 PM   #9 (permalink)
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I'd be chicken to try this until at least after the 12/11 update. No telling how a setting change might conflict.
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Old November 20th, 2009, 02:41 PM   #10 (permalink)
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damn i wanna try this but i don't wanna brick my phone.
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Old November 20th, 2009, 08:16 PM   #11 (permalink)
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Quote:
Originally Posted by KirkS View Post
I saw this hack on another board followed by lots of cases where it caused phones to totally stop working -- wouldn't boot, wouldn't reset, just died.

Tried to find that other board/post, but now I can't. Sorry.
Well guys, I'd say the best way to test this is to go to your local Verizon store and set their phone to EVRC-B. Come back in a week or two and see if that phone is still there.

You may also want to put a small scrape on the phone so you can recognize whether or not the phone actually DID die and they replaced it with a new one.
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Old November 20th, 2009, 08:17 PM   #12 (permalink)
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Well guys, I'd say the best way to test this is to go to your local Verizon store and set their phone to EVRC-B. Come back in a week or two and see if that phone is still there.

You may also want to put a small scrape on the phone so you can recognize whether or not the phone actually DID die and they replaced it with a new one.
The problem with that is, you'll leave one mark and when you come back there will be a 1000.
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Old November 20th, 2009, 08:25 PM   #13 (permalink)
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Heh, alright, well then how about changing some really obscure setting nobody would know about?

Er... come to think of it... you could probably identify the phone just by going into ##PROGRAM again and checking if it's set to EVRC-B or not. :P
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Old November 20th, 2009, 09:15 PM   #14 (permalink)
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I flipped back and forth and was even at Verizon and showed the tech support staff how to do it and then did their phones and nobody bricked their phones.
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Old November 22nd, 2009, 01:07 PM   #15 (permalink)
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Yeah, but it's more a question of how it affects the phone in the long-run. Maybe it makes a certain chip run hotter and damages it? Or something like that... or the Crackberry forum users just didn't know what they were doing!
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Old November 23rd, 2009, 05:55 PM   #16 (permalink)
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This worked for me. Thanks, and thanks for the tip on getting under the Droid's hood.
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Old November 23rd, 2009, 06:10 PM   #17 (permalink)
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ok i just tried it and have verified that calls do sound better. before on regular EVRC, i sounded low while on speakerphone on the other end and off speakerphone, the other caller sounded kinda robotic and choppy. with EVRC-B, speakerphone calls now sound louder and off non-speakerphone calls sound like they should on a phone.

now my question is, what are all the other options for?? i saw an option called "05 Data Rates" and in it my phone has the 153.6/9.6 selected. scrolling down the list i see that there's an option to select 153.6/153.6. looks like this is for up and down speeds and it seems like it would be faster if i selected this. faster for what? i don't know. i'm no expert at any of this stuff. does anyone know?
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Old November 23rd, 2009, 06:29 PM   #18 (permalink)
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Originally Posted by gotwillk View Post
now my question is, what are all the other options for?? i saw an option called "05 Data Rates" and in it my phone has the 153.6/9.6 selected. scrolling down the list i see that there's an option to select 153.6/153.6. looks like this is for up and down speeds and it seems like it would be faster if i selected this. faster for what? i don't know. i'm no expert at any of this stuff. does anyone know?
We have no idea, basically.

The guy who wrote the FAQ says it applies to 1X only and may not work at all if Verizon's towers don't support those speeds.
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Old November 23rd, 2009, 10:40 PM   #19 (permalink)
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OK, so which option should we be using for improved call clarity, or are we to experiment?

Also, i the first post, OP, your last sentence also links to the Enhanced Variable Rate Codec B wiki page....

Was that intentional?
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Old November 23rd, 2009, 10:44 PM   #20 (permalink)
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I chose EVRC-B. Let's see if I brick my phone
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Old November 23rd, 2009, 11:08 PM   #21 (permalink)
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But now the phone is acting very strangely. And I cannot get it back into program mode to change the setting back to EVRC. I do it just like before, but it just pauses for a second or two and then takes me back to hte home screen.
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Old November 23rd, 2009, 11:19 PM   #22 (permalink)
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Wow, that was a major trial on my part. I had to play around closing apps left and right, and finally I went into Advanced Task manager and killed both apps and processes - and all of a sudden I was at the SPC entry screen.

Needless to say I quickly changed the setting back to EVRC. I think I won't be playing with that setting again for a while.
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Old November 24th, 2009, 01:13 AM   #23 (permalink)
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I have been experiencing the muffled issue as well. I have switched mine to B and will report back.
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Old November 24th, 2009, 02:14 AM   #24 (permalink)
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*sigh* - I should really remember all of my Beta testing skills when it comes to this phone.

IOW - don't install 7 apps and change a setting and think it is the settings fault....

*egg on my face, there is.*

Gonna try it again one I figure out which app I installed is causing all my problems....
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Old November 24th, 2009, 06:44 AM   #25 (permalink)
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The SPC password seems to differ in Europe/Germany. 000000 does not work.
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Old November 24th, 2009, 07:18 AM   #26 (permalink)
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Quote:
Originally Posted by nicelysedated View Post
t's in the Programming menu. Use the Programming Menu at your own risk. There are options/settings in this menu that should not be manipulated. That's my disclaimer
On your dialpad dial ##PROGRAMthen press SEND

The SPC password is 000000

Now you should be at the Programming Menu. From the list press "04 Vocode"

Now you can select 13k, EVRC (default option), or EVRC-B

After you select one, back out to your home screen and your phone will reset.

That's it.

Keep in mind, I don't really understand why EVRC-B isn't already the default option on this phone. There may be a good reason. There may not. Hopefully someone from Verizon or Motorola will chime-in and answer my original post.

Enhanced Variable Rate Codec - Wikipedia, the free encyclopedia

Enhanced Variable Rate Codec B - Wikipedia, the free encyclopedia


Posted by SOOBS on Moto forum! thank him!
Gave it a shot, we will see what happens. I will also check the equipment guide for the quick programming to see about anymore tidbits.
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Old November 24th, 2009, 09:30 PM   #27 (permalink)
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I change mine to -B and did voice mail test calls. i could not tell a difference in Northern Ohio.
I would take a guess in a busy urban area with new towers you can take advantage of -B but in rural areas with older towers maybe they can't take or do not need the advantage of lower bit-rates on -B.
Just a thought
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Old November 24th, 2009, 10:00 PM   #28 (permalink)
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I was thinking the same thing - but I went ahead and enabled it anyway.

Problem is, I haven't gotten a call to test it with lol....
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Old November 26th, 2009, 06:31 AM   #29 (permalink)
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Still going strong here. Nothing but good comments from other callers. I can also understand my wife much better since changing them on our Droids.
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Old December 4th, 2009, 06:40 AM   #30 (permalink)
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bump. anyone who adjusted the above settings care to report back now that time has passed? looking to know what folks are finding works best.
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Old December 5th, 2009, 08:47 AM   #31 (permalink)
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bump. anyone who adjusted the above settings care to report back now that time has passed? looking to know what folks are finding works best.
When talking to other cell phones, I don't really notice any difference at all. When talking to a land line though, the quality seems quite high. I don't call enough to know how it effects battery life and such.

Every once in a while it will be a bit echo-y, but I'm not sure if that's the fault of the call mode or not.
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Old December 5th, 2009, 08:16 PM   #32 (permalink)
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I have tried all 3 of them. I can not tell a difference. I had high hopes when I did try them that it would make my phone sound better. The sound that is coming out of my ear piece sounds like it's got a lot of bass and no treble.

Just sounds like something is missing.
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Old December 6th, 2009, 10:03 AM   #33 (permalink)
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am i missing something...where in world is the programming menu??????????
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Old December 6th, 2009, 10:26 AM   #34 (permalink)
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nv found it...dont know if it made a dif tho...
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Old December 6th, 2009, 04:08 PM   #35 (permalink)
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dunno if this is known, i skimmed through the thread and did not see it...

But if you hold down the "home" key, you can go into the programmers menu instead of sending that code through the dialer
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Old December 7th, 2009, 01:33 AM   #36 (permalink)
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Quote:
Originally Posted by gotwillk View Post
i saw an option called "05 Data Rates" and in it my phone has the 153.6/9.6 selected. scrolling down the list i see that there's an option to select 153.6/153.6. looks like this is for up and down speeds and it seems like it would be faster if i selected this. faster for what?
I wondered the same thing. I connected via Wi-Fi to my Verizon FiOS router, which has symmetric internet connectivity at 25Mb/s both up and down. Using the default settings on the Droid, I see the SpeedTest needle pinned at a solid 10Mb/s down, but only get 1MB/s up. That would seem to jibe with the default '05 Data Rates' settings. But even after changing them to 153.6/153.6, I saw identical results although I'd expected to see 10Mb/s in each direction.

I also tried 3G connectivity with both settings. My home is in a very weak signal area for VZW Wireless, so I have yet to see EVDO speed test numbers here showing much more than about 300-400k down (I get about 4x those speeds in other parts of town that are closer to towers). But after making the change to 153.6/153.6, I am suddenly seeing 800-900k down very consistently.

Neither result makes any sense to me: Why would I not see equal speeds up/down via my wi-fi link after making the change? And why would a change to the upload speed limit cause the download speeds of a 3G connection to improve? All very strange. Anyway, I'm going to leave the setting at 153.6/153.6 for awhile just to see what happens in actual usage, and to see if I continue to experience the higher download speeds in a weak-signal area.

Has anyone else tried changing this setting?
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Old December 7th, 2009, 01:46 AM   #37 (permalink)
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You guys are brave. I'd like to see more user reports.
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Old December 7th, 2009, 01:54 AM   #38 (permalink)
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Maybe it not speed as much as signal strength. So like any Wicklund adapter on a PC you can adjust the signal strength. I would test the battery life...increasing the strength would increase the battery usage
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Old December 7th, 2009, 07:44 AM   #39 (permalink)
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i actually asked this same exact question already. answer is on post 18 http://androidforums.com/how-tips/18639-read-improve-call-sound-quality.html#post134207
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Old December 7th, 2009, 04:12 PM   #40 (permalink)
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Just my 2 cents, I tired it out and it didn't do much for the quality of the calls for me. I ran it for a couple days, no big differences but good idea to try if your calls are really bad, didn't brick or anything.
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Old December 7th, 2009, 04:37 PM   #41 (permalink)
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Quote:
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Just my 2 cents, I tired it out and it didn't do much for the quality of the calls for me. I ran it for a couple days, no big differences but good idea to try if your calls are really bad, didn't brick or anything.

That's because you're only changing the codec "on your phone". If you're calling someone with lesser quality audio/network settings, you won't hear a difference...but they may.

Only changing it to 13k will there be any audible differences.

Changing from EVRC -> EVRC B, just adds an additional codec (a compressed one at that) at a slow bandwidth level, over EVRC. So as your signal "degrades", and bandwidth throttles back, there is an additional level above "worst" where audio quality would be higher, at a given bandwidth.
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Old December 7th, 2009, 04:43 PM   #42 (permalink)
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Quote:
Originally Posted by colnago View Post
That's because you're only changing the codec "on your phone". If you're calling someone with lesser quality audio/network settings, you won't hear a difference...but they may.

Only changing it to 13k will there be any audible differences.

Changing from EVRC -> EVRC B, just adds an additional codec (a compressed one at that) at a slow bandwidth level, over EVRC. So as your signal "degrades", and bandwidth throttles back, there is an additional level above "worst" where audio quality would be higher, at a given bandwidth.
Yeah I noted that from reading the info in the post and having done this on other phones in the past. There was no change in the call quality to my friends\family so I just changed it back to default.

On a random side note, does any have any issue with people hearing you when you have your phone shoulders, your holding your phone to your face with your shoulder? Most of my friends have a hard time hearing unless I move it really close to my mouth or speak extremely loud (almost yelling).
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Old December 12th, 2009, 03:17 PM   #43 (permalink)
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Yeah I noted that from reading the info in the post and having done this on other phones in the past. There was no change in the call quality to my friends\family so I just changed it back to default.

On a random side note, does any have any issue with people hearing you when you have your phone shoulders, your holding your phone to your face with your shoulder? Most of my friends have a hard time hearing unless I move it really close to my mouth or speak extremely loud (almost yelling).
I have that same exact problem - and it's extremely annoying to me. Last night i switched the "voice privacy" setting and that, in conjunction with making the aforementioned switch, seems to have helped a bit. I don't like holding things up against my face. Plus is makes the screen look dirty from skin oils.
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Old December 17th, 2009, 10:46 PM   #44 (permalink)
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Folks this is a basic view on 13K, EVRC and EVRC-B.

13K was the first codec brought out in CDMA and will sound more like you however it uses more bandwidth (not your issue)

EVRC was introduced next and helped with the bandwidth but you may notice a little change in your voice or whom your talking too.

EVRC-B is a new codec and is even better on bandwidth.

This bandwidth thing is on the network side at the switching center and has nothing to do with how much bandwidth you use etc......


Now your phone is defaulted to EVRC because most switching centers have already upgraded their equipement to handle the EVRC codec, that means that the equipement used to support 13K is still there but they are not investing in it, meaning they are not expanding the network with 13K codec type equipment. So whatever they had, lets say 2 years ago, they still have, they have not added. Hope that makes sense.

Now with EVRC-B being new, switching centers (or providers such as Verizon) is upgrading to EVRC-B however they do not have it everywhere just yet hence your phone defaulting to the EVRC codec.


Now for the extra part here.

If Verizon in "City A" has EVRC-B and your phone is set to EVRC then the switching center decides to give you a EVRC resource or a 13K resource depending on what they have available at the time of your call.
If you set your phone to 13K then YOUR forcing your phone to only go to 13K, so the switching Center will try to get you a 13K resource, IF available. If its not available then You dont get a resource! Remember 13K resources are limited as they are not adding 13K type resources anymore as more and more phones can support EVRC and EVRC-B.

So now if you go to a market that has Zero 13K resources and your phone is set to 13K then guess what, you cant place a call.

I am sure when time comes and EVRC-B is everywhere, then Verizon will somehow make the default EVRC-B But that will be a long time coming because they are not just going to get rid of the current resources they have of 13K and EVRC. So then the rollover of Resources available will be -> EVRC-B if not available go to EVRC -> if not available to go 13K.

Hope this helps.
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Old December 18th, 2009, 06:43 PM   #45 (permalink)
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So if we setup the phone to use EVRC-B, then we will have the most opportunities to complete a call no matter how the towers are configured (because that setting allows for any of the resources to be used on a tower)?

What is the difference in quality between 13K and EVRC-B?

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Old December 18th, 2009, 10:29 PM   #46 (permalink)
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So if we setup the phone to use EVRC-B, then we will have the most opportunities to complete a call no matter how the towers are configured (because that setting allows for any of the resources to be used on a tower)?

What is the difference in quality between 13K and EVRC-B?

Its not at the towers its at the switching center but yes the idea is that if there are no EVRC-B resources it will look for EVRC if no EVRC then it will go to 13K if no 13K you dont make a call. Basically in that order.
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Old December 20th, 2009, 06:37 PM   #47 (permalink)
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But wait, why wouldn't Verizon just default us to EVRC-B in that case so we can take advantage of new technologies if they're available in the area?
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Old December 21st, 2009, 09:51 AM   #48 (permalink)
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There is a patch southeast of the Saint Louis City that can't handle EVRC-B and will drop your call. If they defaulted us to the new vocoder, the area I mentioned would be a dead zone. Who knows how many areas there are like the one I mentioned.
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Old December 21st, 2009, 10:13 AM   #49 (permalink)
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Is this a Verizon thing? If so, this thread ought to be moved to the Carriers: Verizon forum.

Edit: From next page in this thread...
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This is also not just Verizon specific this is specific to CDMA.
If not, then what's the numeric equivalent of "##PROGRAM"? I guess it's "##7764726", but I'm not sure -- dialling that performs a phone call, which is of course rejected due to incorrect number (and will, oddly, appear as two calls in the call log).
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Old December 21st, 2009, 10:23 AM   #50 (permalink)
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Still going strong here. Nothing but good comments from other callers. I can also understand my wife much better since changing them on our Droids.
This is my scenerio, as well (wife & I have Droids). My whole family are also on Verizon plans.
So how "much better" is it, n9zez? I think I'll give it a shot pending your response.

So trybal, what you are saying, if I have this correct, is that the newer codecs coming out (...which are presumably phasing out the old ones) are slightly sacrificing voice quality for better bandwidth efficiency at the source or "hub"?
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