Open Source Sip: [OpenSIPStack] Sound delay using ...

Print

Up to Discussions in OpenSIPStack

2 Replies Last post: Jun 16, 2008 10:31 PM by joegen

Guest

Jun 13, 2008 7:37 AM

[OpenSIPStack] Sound delay using OSSPhone / Solegy Phone

Hi.

We are currently considering wether we should use OSS for a small client application (possibly using ATLSIP.dll). I've been wondering if it is possible / how difficult it is to change the buffer size because we need smaller delays (this is for LAN calls only not the internet).
I've been recording delays of nearly 300ms which is probably ok through the internet, but is a problem for LAN connections at call centers,.. -- I did measure this by enabling recording on our PBX and then using a SIP phone snom 360 on one end and a PC with Solegy phone / OSSPhone on the other end. At the pc I put a cable from microphone to headset jack (with a condensator and a resistor ;)) so that we can measure the delay properly by just having a look at the wave file.

Please let me know if this is maybe just a parameter somewhere or not configurable at all.

Regards,

Mit freundlichen Grüßen
Thomas Raschbacher
____________________________________________
itCampus Technology GmbH
Österreich * Deutschland * Italien
Dresdner Straße 45 /DG
1200 Wien
thomas.raschbacher@itctec.com
Tel: +43 (1) 890 22 82 - 58
Fax: +43 (1) 890 22 82 - 958
http://www.itctec.com
UID: ATU 6339 0618
Firmenbuchnr: FN292598t, Handelsgericht Wien
Geschäftsführer: Andreas Günser, Andreas Lassmann
Joint Venture von itCampus und MEC

itCampus Gruppe
Deutschland * Großbritannien * Italien * Österreich * Schweiz * Slowakei
http://www.itcampus.eu

Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://sourceforge.net/services/buy/index.php
_______________________________________________
opensipstack-devel mailing list
opensipstack-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/opensipstack-devel

joegen

87 posts since
Apr 28, 2007

1. Jun 16, 2008 10:07 PM

in response to: Guest

Re: [OpenSIPStack] Sound delay using OSSPhone / Solegy Phone

Hi,

For the meantime you may uncomment (or put your own range in ms) the line that goes:

SetAudioJitterDelay(100, 1000);

in SoftPhone.cxx. Its inside the SoftPhoneManager::SoftPhoneManager() constructor block.

I'll have the setter handy in ATLSIP in a shor while

Joegen

Guest wrote:
Hi.

We are currently considering wether we should use OSS for a small client application (possibly using ATLSIP.dll). I've been wondering if it is possible / how difficult it is to change the buffer size because we need smaller delays (this is for LAN calls only not the internet).
I've been recording delays of nearly 300ms which is probably ok through the internet, but is a problem for LAN connections at call centers,.. -- I did measure this by enabling recording on our PBX and then using a SIP phone snom 360 on one end and a PC with Solegy phone / OSSPhone on the other end. At the pc I put a cable from microphone to headset jack (with a condensator and a resistor ;)) so that we can measure the delay properly by just having a look at the wave file.

Please let me know if this is maybe just a parameter somewhere or not configurable at all.

Regards,

Mit freundlichen Grüßen
Thomas Raschbacher
____________________________________________
itCampus Technology GmbH
Österreich * Deutschland * Italien
Dresdner Straße 45 /DG
1200 Wien
thomas.raschbacher@itctec.com
Tel: +43 (1) 890 22 82 - 58
Fax: +43 (1) 890 22 82 - 958
http://www.itctec.com
UID: ATU 6339 0618
Firmenbuchnr: FN292598t, Handelsgericht Wien
Geschäftsführer: Andreas Günser, Andreas Lassmann
Joint Venture von itCampus und MEC

itCampus Gruppe
Deutschland * Großbritannien * Italien * Österreich * Schweiz * Slowakei
http://www.itcampus.eu

Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://sourceforge.net/services/buy/index.php
_______________________________________________
opensipstack-devel mailing list
opensipstack-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/opensipstack-devel

joegen

87 posts since
Apr 28, 2007

2. Jun 16, 2008 10:31 PM

in response to: joegen

Re: [OpenSIPStack] Sound delay using OSSPhone / Solegy Phone

It turned out it's already exposed in ATLSIP

HRESULT SetAudioJitterDelay(in ULONG minDelay, in ULONG maxDelay);

just call atlsip.SetAudioJitterDelay( 10, 100 ); or something like that.

Joegen

joegen wrote:
Hi,

For the meantime you may uncomment (or put your own range in ms) the line that goes:

SetAudioJitterDelay(100, 1000);

in SoftPhone.cxx. Its inside the SoftPhoneManager::SoftPhoneManager() constructor block.

I'll have the setter handy in ATLSIP in a shor while

Joegen

Guest wrote:
Hi.

We are currently considering wether we should use OSS for a small client application (possibly using ATLSIP.dll). I've been wondering if it is possible / how difficult it is to change the buffer size because we need smaller delays (this is for LAN calls only not the internet).
I've been recording delays of nearly 300ms which is probably ok through the internet, but is a problem for LAN connections at call centers,.. -- I did measure this by enabling recording on our PBX and then using a SIP phone snom 360 on one end and a PC with Solegy phone / OSSPhone on the other end. At the pc I put a cable from microphone to headset jack (with a condensator and a resistor ;)) so that we can measure the delay properly by just having a look at the wave file.

Please let me know if this is maybe just a parameter somewhere or not configurable at all.

Regards,

Mit freundlichen Grüßen
Thomas Raschbacher
____________________________________________
itCampus Technology GmbH
Österreich * Deutschland * Italien
Dresdner Straße 45 /DG
1200 Wien
thomas.raschbacher@itctec.com
Tel: +43 (1) 890 22 82 - 58
Fax: +43 (1) 890 22 82 - 958
http://www.itctec.com
UID: ATU 6339 0618
Firmenbuchnr: FN292598t, Handelsgericht Wien
Geschäftsführer: Andreas Günser, Andreas Lassmann
Joint Venture von itCampus und MEC

itCampus Gruppe
Deutschland * Großbritannien * Italien * Österreich * Schweiz * Slowakei
http://www.itcampus.eu

Check out the new SourceForge.net Marketplace.
It's the best place to buy or sell services for
just about anything Open Source.
http://sourceforge.net/services/buy/index.php
_______________________________________________
opensipstack-devel mailing list
opensipstack-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/opensipstack-devel

Go to original post