[Asterisk-Users] Meetme and Sipura SPA-941 - bad jitter/distortion
I have a new * 1.2 server running on a dual-processor machine, 1GB of RAM, Gentoo with Linux 2.6 and a Digium TDM400 (four fxo boards) installed. Everything has been working great until we tried our first Meetme conference call yesterday. I have a total of 12 extensions. 9 of them are in the office with a direct connection to the server, all of the phones are Polycom 501s. The three remote users have the new Sipura SPA-941. I decided on this phone because of the features and it was easy to setup behind NAT (which all of these users have). Regular calls to these users work great with no issues at all. Its been wonderful. However, we had our first company conference via Meetme yesterday, and the SPA-941s sounded horrible in the conference. Very distorted, jittery sound. It was surprising and we ended up having them call in on the POTS line and come in that way and it sounded fine. So, I thought maybe it was a connection issue, but tested with one of our remote uses and have narrowed it down to the phone. If the user connects with X-lite to the conference room the sounds is great. If he then calls back with the SPA-941, the sound is horrible. Hanging up and dialing the extension directly to the SPA-941 sounds good as well. Any ideas what could be going on and how to fix it. I thought it could be a timing thing. The documentation on the Sipura phones is non-existent at the moment, so I have no idea what might be able to be changed. Id greatly appreciate any help or thoughts! Ryan Booz Director of IT Good Steward Software, LLC 111 Sowers Street, Suite 400 State College, PA 16801 Phone: 877-327-3702 x.26 (814-237-3744 x.26) Fax: 719-623-0577 Visit us at www.energycap.com ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Meetme and Sipura SPA-941 - bad jitter/distortion
I'd greatly appreciate any help or thoughts! try: RTP Packet size on SIP tab ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
Re: [Asterisk-Users] Meetme and Sipura SPA-941 - bad jitter/distortion
Any ideas what could be going on and how to fix it. I thought it could be a timing thing. The documentation on the Sipura phones is non-existent at the moment, so I have no idea what might be able to be changed. I’d greatly appreciate any help or thoughts! How about disabling silence suppression on the phones. Give it a try and see. -- Andres Technical Support http://www.telesip.net ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Meetme and Sipura SPA-941 - bad jitter/distortion
Are any of the phones setup to use a codec payload of more than 20ms? Bugid 5697 on the bug tracker has a patch to deal with very poor MeetMe performance when any of the participants are using audio packetization greater than 20ms. Beta1 and beta2 did not have this problem, and I am not sure about the RC versions. Which codec is the 941 using? Dan From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ryan BoozSent: Thursday, December 08, 2005 8:27 AMTo: asterisk-users@lists.digium.comSubject: [Asterisk-Users] Meetme and Sipura SPA-941 - bad jitter/distortion I have a new * 1.2 server running on a dual-processor machine, 1GB of RAM, Gentoo with Linux 2.6 and a Digium TDM400 (four fxo boards) installed. Everything has been working great until we tried our first Meetme conference call yesterday. I have a total of 12 extensions. 9 of them are in the office with a direct connection to the server, all of the phones are Polycom 501s. The three remote users have the new Sipura SPA-941. I decided on this phone because of the features and it was easy to setup behind NAT (which all of these users have). Regular calls to these users work great with no issues at all. Its been wonderful. However, we had our first company conference via Meetme yesterday, and the SPA-941s sounded horrible in the conference. Very distorted, jittery sound. It was surprising and we ended up having them call in on the POTS line and come in that way and it sounded fine. So, I thought maybe it was a connection issue, but tested with one of our remote uses and have narrowed it down to the phone. If the user connects with X-lite to the conference room the sounds is great. If he then calls back with the SPA-941, the sound is horrible. Hanging up and dialing the extension directly to the SPA-941 sounds good as well. Any ideas what could be going on and how to fix it. I thought it could be a timing thing. The documentation on the Sipura phones is non-existent at the moment, so I have no idea what might be able to be changed. Id greatly appreciate any help or thoughts! Ryan Booz Director of IT Good Steward Software, LLC 111 Sowers Street, Suite 400 State College, PA 16801 Phone: 877-327-3702 x.26 (814-237-3744 x.26) Fax: 719-623-0577 Visit us at www.energycap.com ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
RE: [Asterisk-Users] Meetme and Sipura SPA-941 - bad jitter/distortion
The RTP packet size defaults to .03 (packet size in seconds). Changing this to .02 or .01 fixed the issue with Meetme. Anything .03 or above introduces the doppler effect in a Meetme conference. Thanks. Codec is uLaw and silence suppression was off already. Now, however, there is a (very) slight echo introduced into any calls made to this extension. So obviously the way that the phone sends packets is causing some issues. Anyone have a resource or guide to point me to on best way to debug packet transmission for good calls? Thanks so much for the quick help! Most Excellent! Ryan Booz Director of IT Good Steward Software, LLC 111 Sowers Street, Suite 400 State College, PA 16801 Phone: 877-327-3702 x.26 (814-237-3744 x.26) Fax: 719-623-0577 Visit us at www.energycap.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Senad Jordanovic Sent: Thursday, December 08, 2005 11:54 AM To: Asterisk Users Mailing List - Non-Commercial Discussion Subject: RE: [Asterisk-Users] Meetme and Sipura SPA-941 - bad jitter/distortion I'd greatly appreciate any help or thoughts! try: RTP Packet size on SIP tab ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users ___ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
