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Hardware transcoding solutions?
by sperreault＠jive.com Aug. 27, 2015

Aug. 27, 2015

Le 2015-08-27 16:25, Nenad Corbic a ?crit : > > I think we are discussing different things here. > > What Sw are you using ? Home-grown. > Our dual Xeon Hp dl380 g7. > Using vanilla FreeSWITCH without transcoding can do 2000 calls yes. > Full signaling and rtp media. > > If you add sw transcoding that number drops exponentially to about 500. For g729. > > Maybe you have nicer software that is much more efficient. Yes we do. Sorry, can't go into details for obvious reasons. I don't know about the performance of FreeSWITCH. All I say is that a generic server can transcode >5k calls in software. Quite a few years ago at a ClueCon I tried explaining how everyone was writing VoIP software the wrong way and how they were throwing performance out the window. You were there Nenad. :) Admittedly I was fairly drunk so I probably did not sound very convincing... ;) > How are you dealing with the I/O on single core with few thousand calls? 5k calls is ~500 kpps, not a problem on any non-ancient server NIC. Simon

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Hardware transcoding solutions?
by ncorbic＠sangoma.com Aug. 27, 2015

Aug. 27, 2015

> > I think we are discussing different things here. > > What Sw are you using ? > > Our dual Xeon Hp dl380 g7. > Using vanilla FreeSWITCH without transcoding can do 2000 calls yes. > Full signaling and rtp media. > > If you add sw transcoding that number drops exponentially to about 500. For g729. > > Maybe you have nicer software that is much more efficient. > > How are you dealing with the I/O on single core with few thousand calls? > > Thanks. > > Nenad Corbic > Sent from iPhone > >> On Aug 27, 2015, at 4:12 PM, Simon Perreault <sperreault at jive.com> wrote: >> >> Le 2015-08-27 16:00, Nenad Corbic a ?crit : >>> In our experience. >>> The number of software trasncoding sessions on a decent size box (quad core xeon) is about 300 to 500 sessions. >> >> You guys need to update your experience. We do more than that on a >> single *core*. >> >> Simon

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Hardware transcoding solutions?
by sperreault＠jive.com Aug. 27, 2015

Aug. 27, 2015

Le 2015-08-27 16:00, Nenad Corbic a ?crit : > In our experience. > The number of software trasncoding sessions on a decent size box (quad core xeon) is about 300 to 500 sessions. You guys need to update your experience. We do more than that on a single *core*. Simon

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Hardware transcoding solutions?
by bbridges＠o1.com Aug. 27, 2015

Aug. 27, 2015

As my initial email said, we've been looking at the NetBorder box from you guys, but I want to see what other options (if any) are out there. Our current solution isn't very conducive to growth. Brooks Bridges | Sr. Voice Services Engineer O1 Communications 5190 Golden Foothill Pkwy El Dorado Hills, CA 95762 office: 916.235.2097 | main: 888.444.1111, Option 2 email: bbridges at o1.com |?web: www.o1.com -----Original Message----- From: Nenad Corbic [mailto:ncorbic at sangoma.com] Sent: Thursday, August 27, 2015 1:01 PM To: Simon Perreault; Brooks Bridges; voiceops at voiceops.org Subject: Re: [VoiceOps] Hardware transcoding solutions? In our experience. The number of software trasncoding sessions on a decent size box (quad core xeon) is about 300 to 500 sessions. G729 to G711 RTP : Either SIP to SIP or SIP to TDM. If you need to transcode 5000 channels I would be looking at hw solution. You can go with SW solution but the cost of sw licences and servers and rack space becomes prohibitive. Assuming this is SIP/RTP application, you could look at major SBC vendors, including Sangoma Technologies. You can transcode 5000 sessions in as little as 2x1U SBC appliances that support HW trans-coding. Best Regards, Nenad Corbic, B.Eng VP Engineering ncorbic at sangoma.com Sangoma Technologies 100 Renfrew Drive, Suite 100, Markham, ON L3R 9R6 Canada t. +1 800 388 2475 (N. America) t. +1 905 474 1990 x4113 f. +1 905 474 9223 ________________________________________ From: VoiceOps <voiceops-bounces at voiceops.org> on behalf of Simon Perreault <sperreault at jive.com> Sent: Thursday, August 27, 2015 3:45 PM To: Brooks Bridges; voiceops at voiceops.org Subject: Re: [VoiceOps] Hardware transcoding solutions? Le 2015-08-27 15:38, Brooks Bridges a ?crit : > Our total requirement is > 5000 channels, however I'm more than > willing to deploy multiple devices to reach this number as long as the > power and space requirements aren't horribly restrictive. One can easily transcode 5000 729<->711 channels in software on a generic 1U server. Have you even tried? Simon _______________________________________________ VoiceOps mailing list VoiceOps at voiceops.org https://puck.nether.net/mailman/listinfo/voiceops

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Preventing calls to cell phones with guaranteed accuracy
by caalvarez＠gmail.com Aug. 26, 2015

Aug. 26, 2015

I have a customer in market research who is legally required to manually dial calls to cell phones. Right now they are considering abandoning all of their auto/predictive dialer software and going to manual dial for everything, because the list-scrubbing services have been shown to be inaccurate. There are extreme penalties for auto-dialing a cell phone, and "best effort" is NOT a defense to this, at all. For example, Gallup just settle a claim for $12M. So they need a totally accurate way to prevent a cell phone call from originating from their dialer. The only thing I can think of is some sort of LRN dip + LRN-to-carrier-type response. One of their people talked to Neustar, but didn't get great answers because he doesn't really understand telephony. Before I get in touch with Neustar, I thought I'd see if people here have some ideas. If you provide a commercial product for this, please feel free to tell me so on or off list, the customer is willing to pay for the service and we're open to all options. I don't have a budget number yet but manual dialing is going to cost them quite a bit for some types of studies.

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3GPP
by nathana＠fsr.com Aug. 25, 2015

Aug. 25, 2015

All, I realize this may be off the beaten path for this list, but is there anybody here who is fluent in LTE networks and the standards that govern them? I'm not sure what other list would be appropriate...I looked through the 3GPP's listserv but there are a staggering number of lists and I suspect they are not intended for laymen/outsiders. I have a very specific question about UEs, UICCs, and RRC security negotiation (integrity & ciphers) during attachment, and so far I have not found our vendor to be very helpful. If there is somebody out there that knows something about this area, and is willing to chat with me about it, feel free to contact me off-list. Thanks much, -- Nathan Anderson First Step Internet, LLC nathana at fsr.com

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Preventing calls to cell phones with guaranteed accuracy
by Derek.Andrew＠usask.ca Aug. 19, 2015

Aug. 19, 2015

Isn't it impossible to decide if a number is a cell phone or a land line because of local number portability? On Tue, Aug 18, 2015 at 2:34 PM, Matthew Crocker <matthew at corp.crocker.com> wrote: > > > Depending on your switch you should be able to build a profile for the > customer and reject calls going to cell phone LRN providers. > > Personally, I wouldn?t take on the liability of guaranteeing their > auto-dialer only calls landlines. You would end up being sued if you make > a mistake. IMHO, let them manually dial or find a list scrubbing company > that actually works. > > ? > > Matthew Crocker > President - Crocker Communications, Inc. > Managing Partner - Crocker Telecommunications, LLC > E: matthew at corp.crocker.com > E: matthew at crocker.com > > > On Aug 18, 2015, at 4:30 PM, Carlos Alvarez <caalvarez at gmail.com> wrote: > > I have a customer in market research who is legally required to manually > dial calls to cell phones. Right now they are considering abandoning all > of their auto/predictive dialer software and going to manual dial for > everything, because the list-scrubbing services have been shown to be > inaccurate. There are extreme penalties for auto-dialing a cell phone, and > "best effort" is NOT a defense to this, at all. For example, Gallup just > settle a claim for $12M. > > So they need a totally accurate way to prevent a cell phone call from > originating from their dialer. The only thing I can think of is some sort > of LRN dip + LRN-to-carrier-type response. One of their people talked to > Neustar, but didn't get great answers because he doesn't really understand > telephony. Before I get in touch with Neustar, I thought I'd see if people > here have some ideas. > > If you provide a commercial product for this, please feel free to tell me > so on or off list, the customer is willing to pay for the service and we're > open to all options. I don't have a budget number yet but manual dialing > is going to cost them quite a bit for some types of studies. > > _______________________________________________ > VoiceOps mailing list > VoiceOps at voiceops.org > https://puck.nether.net/mailman/listinfo/voiceops > > > -- Copyright 2015 Derek Andrew (excluding quotations) University of Saskatchewan Typed but not read.

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Local Rwandan DID for US company?
by graham＠nerdventures.com Aug. 16, 2015

Aug. 16, 2015

Howdy, folks, A consulting client is traveling to Rwanda for business, and I'd like to provide him with a local number he can call to reach me if need be. I don't see any Rwandan DIDs at Twilio or VOIP.ms. Any leads? This is a nice-to-have, not essential, so I'd like to see pricing similar to South African DIDs. Voice capabilities are my baseline requirement, with SMS as a nice bonus. I'd forward calls to my US PSTN number, but I can accept calls via SIP as well. thanks, Graham Freeman, Principal Nerd NerdVentures.com +1-510-898-6772 graham at nerdventures.com https://www.linkedin.com/in/grahamfreeman Twitter: @get_nerdy

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Canadian PSTN Originated Test Call
by jgrow＠flowroute.com Aug. 10, 2015

Aug. 10, 2015

I'm trying to generate some test calls to a toll-free number over the Canadian PSTN. Anyone on list with a Canadian TDM/POTS line willing to place a call or two to 18557777003? -- Justin

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Hosted Exchange Business
by ryan＠finnesey.com Aug. 10, 2015

Aug. 10, 2015

I know in the mid 2000s a lot of CLECs got into the hosted exchange business. I am trying to connect with CLECs that might have an interest in off-loading/seller there user base of exchange users Any ideas on the best way to go about finding them? Sent from my Windows Phone

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