Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-10 Thread Kevin P. Fleming

On 01/09/2011 08:23 AM, mgra...@mstvp.com wrote:

Actually, all of the conference phones are known by the SoundStation
name and the desk phones are SoundPoint.


Sure enough... thanks for the clarification!

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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-09 Thread Steve Underwood

On 01/08/2011 03:44 AM, Kevin P. Fleming wrote:

On 01/06/2011 11:34 AM, mgra...@mstvp.com wrote:

We should also be very clear that the Siren codecs are supported on the
Polycom SoundStation conference phones and the VVX-1500 Business Media
Phones. These codecs are not supported in the SoundPoint desk phones.
The SoundPoint series support the more basic G.722 codec in the
IP335/450/550/560/650/670 models.


The SoundPoint IP6000 and IP7000 conference phones (and maybe the 
IP5000, I haven't checked) also support G.722.1 and G.722.1C.


The IP6000 is actually model Polycom recommended for testing when we 
implemented G.722.1.


One of the annoying things about the Polycoms is trying to work out what 
they can do. You have to search quite hard to find which codecs each 
model supports.


Steve


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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-09 Thread mgraves
Actually, all of the conference phones are known by the SoundStation
name and the desk phones are SoundPoint.


Michael Graves
mgraves  mstvp.com
o(713) 861-4005
c(713) 201-1262
sip:mjgra...@mstvp.onsip.com
skype mjgraves

  Original Message 
 Subject: Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD
 voice codecs?
 From: Steve Underwood ste...@coppice.org
 Date: Sat, January 08, 2011 11:16 am
 To: Asterisk Users Mailing List - Non-Commercial Discussion
 asterisk-users@lists.digium.com
 
 
 On 01/08/2011 03:44 AM, Kevin P. Fleming wrote:
  On 01/06/2011 11:34 AM, mgra...@mstvp.com wrote:
  We should also be very clear that the Siren codecs are supported on the
  Polycom SoundStation conference phones and the VVX-1500 Business Media
  Phones. These codecs are not supported in the SoundPoint desk phones.
  The SoundPoint series support the more basic G.722 codec in the
  IP335/450/550/560/650/670 models.
 
  The SoundPoint IP6000 and IP7000 conference phones (and maybe the 
  IP5000, I haven't checked) also support G.722.1 and G.722.1C.
 
 The IP6000 is actually model Polycom recommended for testing when we 
 implemented G.722.1.
 
 One of the annoying things about the Polycoms is trying to work out what 
 they can do. You have to search quite hard to find which codecs each 
 model supports.
 
 Steve
 
 
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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-08 Thread Kevin P. Fleming

On 01/06/2011 11:34 AM, mgra...@mstvp.com wrote:

We should also be very clear that the Siren codecs are supported on the
Polycom SoundStation conference phones and the VVX-1500 Business Media
Phones. These codecs are not supported in the SoundPoint desk phones.
The SoundPoint series support the more basic G.722 codec in the
IP335/450/550/560/650/670 models.


The SoundPoint IP6000 and IP7000 conference phones (and maybe the 
IP5000, I haven't checked) also support G.722.1 and G.722.1C.


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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-06 Thread Steve Underwood

On 01/06/2011 05:25 AM, Tim Panton wrote:

On 5 Jan 2011, at 13:07, Steve Underwood wrote:


G.722.1 is a 7kHz bandwidth codec. G.722.1C is a stretched version offering 
14kHz bandwidth. These are most often found in Polycom phones, but they are 
available elsewhere. The only widely supported HD codec is G.722. Pretty much 
anything offering wideband voice supports G.722.

Except skype which only supports SiLK as the HD codec. I mention this because 
most people's experience with HD will be in a Skype-to-skype call,
although admittedly not in this group.
That's a very good point, although Skype does support more codecs than 
just Silk, and I believe G.722 may be one of them. Nonetheless, it is 
Silk that people have got used to. It offers about 11kHz bandwidth, so 
it is wider band than G.722. The critical addition than wideband gives 
over normal telephony is the 5kHz to 7kHz area, where a lot of the 
energy that allows us to differentiate the unvoiced phoneme lies. The 
energy between 7kHz to 15kHz does, however, add a lot to the human 
voice, and allows for a more relaxed listening experience - its just 
less tiring to listen to.


Steve


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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-06 Thread mgraves
We should also be very clear that the Siren codecs are supported on the
Polycom SoundStation conference phones and the VVX-1500 Business Media
Phones. These codecs are not supported in the SoundPoint desk phones.
The SoundPoint series support the more basic G.722 codec in the
IP335/450/550/560/650/670 models.

Michael Graves
mgraves  mstvp.com
o(713) 861-4005
c(713) 201-1262
sip:mjgra...@mstvp.onsip.com
skype mjgraves

  Original Message 
 Subject: Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD
 voice codecs?
 From: Steve Underwood ste...@coppice.org
 Date: Wed, January 05, 2011 6:09 pm
 To: Asterisk Users Mailing List - Non-Commercial Discussion
 asterisk-users@lists.digium.com
 
 
 On 01/06/2011 12:05 AM, Kevin P. Fleming wrote:
  On 01/05/2011 07:07 AM, Steve Underwood wrote:
  On 01/05/2011 03:29 PM, Bruce B wrote:
  Hi Everyone,
 
  1- Are the Siren7 and Siren14 the G.722 HD voice codecs?
  2- Are these codecs only for Polycom units or are they universal
  across all other SIP phones that advertise the HD voice codec like
  Aastra?
  3- What is the main difference between the two and is it advisable to
  run these over the INTERnet (not INTRAnet)?
 
  The G.722 codec in * is G.722. The Siren7 codec in * is probably not
  Siren 7, but G.722.1. G.722.1 is very similar to Siren7, but uses a
  different code in the SDP and has some minor differences in the codec.
  The name G.722.1 may look similar to G.722, but the codecs bear no
  relation to each other. The Siren14 codec in * is probably not Siren14,
  but G.722.1C. G.722.1C is very similar to Siren14, but like
  Siren7/G.722.1 the SDP code is different, and there are minor
  differences in the codec.
 
  Asterisk actually supports both the Siren* and G.722.1* names in SDP 
  negotiations. I wasn't aware there were bitstream incompatibilities 
  between the Siren* and G.722.1* variants, even though the code may be 
  slightly different... so Asterisk uses a single codec module for both 
  variants.
 
 I am unclear how compatible or incompatible the bitstreams may be. What 
 I know (from implementing these codecs) is that the source code Polycom 
 provide licencees, as the basis for developing their own G.722.1 and 
 G.722.1C codecs, has several comments referring to things not being 
 quite the same as Siren7/Siren14. However, they don't hand out the 
 actual Siren7/Siren14 source code, so I don't know how much divergence 
 there is.
 
 Steve
 
 
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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-05 Thread Steve Underwood

On 01/05/2011 03:29 PM, Bruce B wrote:

Hi Everyone,

1- Are the Siren7 and Siren14 the G.722 HD voice codecs?
2- Are these codecs only for Polycom units or are they universal 
across all other SIP phones that advertise the HD voice codec like Aastra?
3- What is the main difference between the two and is it advisable to 
run these over the INTERnet (not INTRAnet)?


The G.722 codec in * is G.722. The Siren7 codec in * is probably not 
Siren 7, but G.722.1. G.722.1 is very similar to Siren7, but uses a 
different code in the SDP and has some minor differences in the codec. 
The name G.722.1 may look similar to G.722, but the codecs bear no 
relation to each other. The Siren14 codec in * is probably not Siren14, 
but G.722.1C. G.722.1C is very similar to Siren14, but like 
Siren7/G.722.1 the SDP code is different, and there are minor 
differences in the codec.


G.722.1 is a 7kHz bandwidth codec. G.722.1C is a stretched version 
offering 14kHz bandwidth. These are most often found in Polycom phones, 
but they are available elsewhere. The only widely supported HD codec is 
G.722. Pretty much anything offering wideband voice supports G.722.


Steve


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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-05 Thread Kevin P. Fleming

On 01/05/2011 01:29 AM, Bruce B wrote:

Hi Everyone,


You should really spend some time learning how to use a widely available 
search engine, such as Google or Bing. Many of the questions you ask 
here could be quickly answered that way.




1- Are the Siren7 and Siren14 the G.722 HD voice codecs?


That depends on what you mean by the G.722 HD voice codecs. G.722 (no 
suffix or annex) is a specific voice codec, and it is unrelated to 
Siren7 and Siren14. G.722.1 is the same thing as Siren7, and G.722.1 
Annex C is the same thing as Siren14. These are fairly well explained on 
the Wikipedia pages for G.722 and G.722.1.



2- Are these codecs only for Polycom units or are they universal across
all other SIP phones that advertise the HD voice codec like Aastra?


There is no the HD voice codec. The most widely available HD voice 
codec is G.722, but there are others available as well in endpoints from 
various manufacturers. G.722.1 and G.722.1C are available in many 
Polycom SIP devices, but not yet widely available in other devices 
(although there are softphones that have them), although they are 
available as binary add-on modules for Asterisk.



3- What is the main difference between the two and is it advisable to
run these over the INTERnet (not INTRAnet)?


Which two are you referring to here?

G.722 is frequently used over the Internet (the weekly VUC makes it 
available, for example), and G.722.1/C use less network bandwidth than 
it does, so they should be usable in the same situations as well. 
Whether they are advisable for you to use or not depends entirely on 
your network connectivity, bandwidth and packet loss situation. None of 
them use more network bandwidth than G.711, though, so if your network 
connections can already handle G.711 calls without causing unacceptable 
audio disturbance, you should be fine using any of these codecs as well.


--
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
skype: kpfleming | jabber: kflem...@digium.com
Check us out at www.digium.com  www.asterisk.org

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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-05 Thread Kevin P. Fleming

On 01/05/2011 07:07 AM, Steve Underwood wrote:

On 01/05/2011 03:29 PM, Bruce B wrote:

Hi Everyone,

1- Are the Siren7 and Siren14 the G.722 HD voice codecs?
2- Are these codecs only for Polycom units or are they universal
across all other SIP phones that advertise the HD voice codec like
Aastra?
3- What is the main difference between the two and is it advisable to
run these over the INTERnet (not INTRAnet)?


The G.722 codec in * is G.722. The Siren7 codec in * is probably not
Siren 7, but G.722.1. G.722.1 is very similar to Siren7, but uses a
different code in the SDP and has some minor differences in the codec.
The name G.722.1 may look similar to G.722, but the codecs bear no
relation to each other. The Siren14 codec in * is probably not Siren14,
but G.722.1C. G.722.1C is very similar to Siren14, but like
Siren7/G.722.1 the SDP code is different, and there are minor
differences in the codec.


Asterisk actually supports both the Siren* and G.722.1* names in SDP 
negotiations. I wasn't aware there were bitstream incompatibilities 
between the Siren* and G.722.1* variants, even though the code may be 
slightly different... so Asterisk uses a single codec module for both 
variants.


--
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
skype: kpfleming | jabber: kflem...@digium.com
Check us out at www.digium.com  www.asterisk.org

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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-05 Thread Tilghman Lesher
On Wednesday 05 January 2011 07:07:10 Steve Underwood wrote:
 On 01/05/2011 03:29 PM, Bruce B wrote:
  Hi Everyone,
  
  1- Are the Siren7 and Siren14 the G.722 HD voice codecs?
  2- Are these codecs only for Polycom units or are they universal
  across all other SIP phones that advertise the HD voice codec like
  Aastra? 3- What is the main difference between the two and is it
  advisable to run these over the INTERnet (not INTRAnet)?
 
 The G.722 codec in * is G.722. The Siren7 codec in * is probably not
 Siren 7, but G.722.1. G.722.1 is very similar to Siren7, but uses a
 different code in the SDP and has some minor differences in the codec.
 The name G.722.1 may look similar to G.722, but the codecs bear no
 relation to each other. The Siren14 codec in * is probably not Siren14,
 but G.722.1C. G.722.1C is very similar to Siren14, but like
 Siren7/G.722.1 the SDP code is different, and there are minor
 differences in the codec.

The Siren7 and Siren14 codecs in Asterisk are licensed code from Polycom,
so they are indeed the Siren7 and Siren14 codecs.  They will interoperate
with any other vendor who has licensed those codecs from Polycom.

-- 
Tilghman

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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-05 Thread Steve Underwood

On 01/06/2011 01:04 AM, Tilghman Lesher wrote:

On Wednesday 05 January 2011 07:07:10 Steve Underwood wrote:

On 01/05/2011 03:29 PM, Bruce B wrote:

Hi Everyone,

1- Are the Siren7 and Siren14 the G.722 HD voice codecs?
2- Are these codecs only for Polycom units or are they universal
across all other SIP phones that advertise the HD voice codec like
Aastra? 3- What is the main difference between the two and is it
advisable to run these over the INTERnet (not INTRAnet)?

The G.722 codec in * is G.722. The Siren7 codec in * is probably not
Siren 7, but G.722.1. G.722.1 is very similar to Siren7, but uses a
different code in the SDP and has some minor differences in the codec.
The name G.722.1 may look similar to G.722, but the codecs bear no
relation to each other. The Siren14 codec in * is probably not Siren14,
but G.722.1C. G.722.1C is very similar to Siren14, but like
Siren7/G.722.1 the SDP code is different, and there are minor
differences in the codec.

The Siren7 and Siren14 codecs in Asterisk are licensed code from Polycom,
so they are indeed the Siren7 and Siren14 codecs.  They will interoperate
with any other vendor who has licensed those codecs from Polycom.
What Polycom licence to everyone is actually G.722.1 and G.722.1C. Been 
there. Done that.


Steve


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Re: [asterisk-users] Are the Siren7 and Siren14 the G.722 HD voice codecs?

2011-01-05 Thread Steve Underwood

On 01/06/2011 12:05 AM, Kevin P. Fleming wrote:

On 01/05/2011 07:07 AM, Steve Underwood wrote:

On 01/05/2011 03:29 PM, Bruce B wrote:

Hi Everyone,

1- Are the Siren7 and Siren14 the G.722 HD voice codecs?
2- Are these codecs only for Polycom units or are they universal
across all other SIP phones that advertise the HD voice codec like
Aastra?
3- What is the main difference between the two and is it advisable to
run these over the INTERnet (not INTRAnet)?


The G.722 codec in * is G.722. The Siren7 codec in * is probably not
Siren 7, but G.722.1. G.722.1 is very similar to Siren7, but uses a
different code in the SDP and has some minor differences in the codec.
The name G.722.1 may look similar to G.722, but the codecs bear no
relation to each other. The Siren14 codec in * is probably not Siren14,
but G.722.1C. G.722.1C is very similar to Siren14, but like
Siren7/G.722.1 the SDP code is different, and there are minor
differences in the codec.


Asterisk actually supports both the Siren* and G.722.1* names in SDP 
negotiations. I wasn't aware there were bitstream incompatibilities 
between the Siren* and G.722.1* variants, even though the code may be 
slightly different... so Asterisk uses a single codec module for both 
variants.


I am unclear how compatible or incompatible the bitstreams may be. What 
I know (from implementing these codecs) is that the source code Polycom 
provide licencees, as the basis for developing their own G.722.1 and 
G.722.1C codecs, has several comments referring to things not being 
quite the same as Siren7/Siren14. However, they don't hand out the 
actual Siren7/Siren14 source code, so I don't know how much divergence 
there is.


Steve


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