Thanks Faisal.
Your link was especially helpful. I had been going by the AirMax DSCP/TOS mapping chart from 2012 and it seems the TOS I had set for voice is now considered Background. -Matt From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Faisal Imtiaz Sent: Friday, August 01, 2014 10:27 AM To: WISPA General List Subject: Re: [WISPA] VoIP - Who is using successfully? We are..... There are number of things to check for.... Not knowing much about your network setup.... Making assumption that your BH and AP's are not over loaded. Making assumption that your MT's are not over loaded Making assumption that your Queue mech. are not an issue... Making assumption that there is no packet loss on the network path from customer to the VOIP Provider's (SIP & RTP proxy) Basic fundamentals are as follows:- (think of peeling an onion, starting from the core going outwards). SIP Voice is two types of packets... SIP Signaling and RTP (Real time Packets / Voice or video) Most providers will mark their outbound SIP & RTP with appropriate DSCP (qos) markings (feel free to google for info). Most ATA's will mark outbound SIP & RPT with appropriate DSCP (802.1p qos) markings. Most Wireless Radio Mfg, when they support QOS, they will respect these markings, and handle traffic appropriately, (unless they run into other issues,, e.g. high pps rates etc). http://wiki.ubnt.com/AirMax_-_QoS_DSCP/TOS_Mappings FYI, with UBNT qos handling varied with Firmware Version...e.g. " BOLD - special mapping cases starting from v5.5.4 Before v5.5.4 DSCP 46 go to WME Video, DSCP 26 go to WME Best Effort." ---------- Double Check the ATA's QOS Packet Marking...to make sure that Default DSCP Marking is what you are expecting... ----------- The other thing you need to check on is Jitter buffer settings..... you may want to enable it and set it for for something like 100 to 150, to see if it improves stuff. ----------------------------------------------------------------------------------------- FYI, the biggest problem with VOIP and Fixed Wireless, is Packet Loss, and Jitter (this is more troublesome .. some packets arrive on time, other are delayed, and some are out of order) ================================================== Feel free to ping me off list if you need more info. or have questions. Regards. Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net <mailto:supp...@snappytelecom.net> _____ From: "Matt Brendle" <mattagator.mailingli...@gmail.com <mailto:mattagator.mailingli...@gmail.com> > To: "WISPA General List" <wireless@wispa.org <mailto:wireless@wispa.org> > Sent: Thursday, July 31, 2014 3:56:33 PM Subject: [WISPA] VoIP - Who is using successfully? So a question for the masses. We are selling VoIP services and the number of Support Calls we get about poor performance is more than I would expect. Our basic setup is UBNT backhauls and APs, Mikrotik infrastructure routers, and CISCO/Linksys ATAs. Primarily Vitelity accounts. We get complaints of choppiness and other issues, and I wanted to see what others are using successfully. I am currently making a test procedure to try to find out where the issue is, but if anybody has success stories and example setups that would be great. I know that is a rather broad question, but I want to make this work and get our Support Calls down. Matt – NC Wireless _______________________________________________ Wireless mailing list Wireless@wispa.org <mailto:Wireless@wispa.org> http://lists.wispa.org/mailman/listinfo/wireless
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