[cisco-voip] Change WAV format

[Pat Hayes]

Switching to a codec of sufficiently low bitrate to save you any space
is going to have a very noticeable impact on your recording quality
that will be especially apparent when heard between the studio
recorded G711 prompts from Unity :-) Disks are cheep these days, is it
not possible to upgrade the Exchange server? Also note that if you do
change the recording codec it won't do anything to all of the existing
messages stored on your Exchange server. Perhaps you'd be better
served by implementing a message aging policy to clear out messages
older then x days. Lastly, ensure that your nightly exchange tasks are
running. If they don't, you won't reclaim the disk space from deleted
mailboxes, etc.

If you still want to change your recording codec, take a look at this
doc. It give you the procedure as well as some of the pros and cons of
each codec (average size, whether codec is included in default windows
install or with vmo, etc):

http://www.cisco.com/en/US/docs/voice_ip_comm/unity/white/paper/cuaudiocodecs.html#wp60847

-Pat

On Wed, Apr 21, 2010 at 5:22 PM, Loren.Gray
<Loren.Gray at twinriversusd.org> wrote:
> Neal,
>
>
>
> I am looking to change the format of the audio files when someone leaves a
> voicemail. When I go into Unity tools depot and use the set record format I
> am looking at several options. I am currently using:
>
> CCITT u-Law
>
> 8.000 kHz, 8 Bit, Mono 7kb/sec
>
>
>
> I am looking at the other formats; for example, Windows Media Audio V2
> records at less than a kb per second.
>
>
>
> I am looking to reduce the amount of space voicemails are taking up on
> exchange.
>
>
>
> Loren Gray
>
> Network Specialist
>
> Twin Rivers Unified School District
>
> Sacramento, CA 95652
>
> 916-286-5150
>
>
>
> From: Haas, Neal [mailto:nhaas at co.fresno.ca.us]
> Sent: Wednesday, April 21, 2010 1:04 PM
>
> To: Loren.Gray; 'cisco-voip at puck.nether.net'
> Subject: RE: [cisco-voip] Change WAV format
>
>
>
> If you are trying to make them smaller, use the G.711 A-Law, G.711 Mu-Law
> are the ones that you want. Please not the will most likely lose some call
> quality. Let us know what software you are going to use, I might need to do
> a few files myself.
>
>
>
> How many files are you going to convert?
>
>
>
> Neal Haas
>
>
>
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Miller, Brinis
> Sent: Wednesday, April 21, 2010 12:06 PM
> To: Loren.Gray; cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] Change WAV format
>
>
>
> Loren,
>
>
>
> Check the Cisco Unity Connection System Administration Guide for your setup
>
>
>
> Brinis Miller
>
>
>
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Loren.Gray
> Sent: Wednesday, April 21, 2010 2:50 PM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] Change WAV format
>
>
>
> I have been tasked with making the voicemail WAV files smaller. Does anyone
> have any recommendations on which format to use? I do not want to change it
> and cause issues for the clients.
>
>
>
> Loren Gray
>
> Network Specialist
>
> Twin Rivers Unified School District
>
> Sacramento, CA 95652
>
> 916-286-5150
>
>
>
>
>
>
>
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