August 2013 - VoiceOps - lists.voiceops.org

Maintenance for Performance Technologies SEGway
by scott＠socket.net May 17, 2017

May 17, 2017

We have been using a set of PTI SEGway x201s with point code emulation for a number of years now. We also have an unlicensed spare in stock. The maintenance contract renewals are due and the two quotes I've received are quite high. I know of at least one other company that has chosen to drop the vendor maintenance and take care of that in-house. I would like to hear from anyone that is currently using SEGways and find out what they chose to do for maintenance. I would also be very interested to hear of any bad experiences from chosing the in-house option. Thanks. Scott Stratman Network Facilities Manager SOCKET 573-999-4376 scott at socket.net 1-800-SOCKET-3 www.socket.net

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Homegrown SIP load testing platform
by jchleboun＠e-c-group.com Aug. 31, 2013

Aug. 31, 2013

I am interested to see if y'all have recommendations for putting together a SIP load testing platform using general purpose hardware and open-source (or inexpensive) software. We are aware of Empirix Hammer and similar solutions, and we are looking to see if there is an alternative option. Goals: - Generate somewhere on the order of 20k phone calls with real SIP and RTP. - Route the flows through our VoIP infrastructure to test performance limits. - Receive and analyze the SIP and RTP on the other end to find out at what load the signaling and/or media start to break down. Attempted already: - SIPp spread across many servers. Here the limiting factor seemed to be the CPU load from the interrupts from each packet. The CPU on the servers sending and receiving the phone calls got bogged down before the VoIP core. - We have dabbled with interrupt moderation in the NIC drivers, but this has not seemed to help very much. Looks interesting: - Has anyone had success using PF_RING with Direct NIC Access and libzero from the folks at ntop? Has anyone been able to use this with SIPp or some other SIP and RTP generator? Many thanks, Jon Chleboun

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SIP Router
by David.Hiers＠adp.com Aug. 16, 2013

Aug. 16, 2013

Hi, I need a SIP router to steer calls though our core. All its going to do is redirect calls by sending 3xx responses to every INVITE. What do you think of Kamailio? Does it play well with Broadsoft and Acme? Have you seen any better freeware out there? Thanks, David This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system.

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GRE
by bobhancock205＠gmail.com Aug. 14, 2013

Aug. 14, 2013

I have a project in which a user is interesting in interconnecting and deploying ATAs for VoIP services but wants to use private IP addressing on the devices. My initial though is to NAT these devices and allow my SBC to handle NAT traversal for them. This allows the to use their dedicated connection to my network or if that link goes down fail over to moving to connecting across the internet. They are interested in potentially doing a GRE tunnel and keeping the private addressing in place as it traverses that tunnel. I am concerned about encapsulating the VoIP traffic as well as with the fail over options. Does anybody have any experiences with VoIP over GRE tunnels and what type of results and challenges you encountered? Thanks. --BH

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Sprint Interconnect
by jared＠compuwizz.net Aug. 9, 2013

Aug. 9, 2013

If anyone has interconnected with Sprint via SIP with their IPSec requirement, I could use some pointers off list. Thanks, Jared

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level 3 taxes, fees and surcharges
by shripald＠gmail.com Aug. 9, 2013

Aug. 9, 2013

quick question to those of you who have Level3 direct contracts for SIP interconnection. i'm just wondering if there is a way to NOT pay or become exempt from State and Local 911 fees.. it is becoming larger and larger every month and now is about 8% of our bill. these are just fees not e911 charges . thanks!

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Technical contact at Verizon Wireless
by rmckrill＠fidelityvoice.com Aug. 2, 2013

Aug. 2, 2013

Was hoping to find someone out there that might have a contact within Verizon Wireless that could assist in a resolving a voice quality (static) issue on calls outbound from VZW, inbound to L3/GBLX in the Cleveland, Ohio market. Anyone able to contact me off-list with some info or recommendations on resolution? The trouble has been isolated to be outside of L3/GLBX's network and obviously AT&T is unwilling to research the problem further. Thanks in advance! Best Regards, --- Rob McKrill Voice Engineering Fidelity Voice and Data

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Level3 Issues?
by april＠teliax.com Aug. 2, 2013

Aug. 2, 2013

Hi PE, We've had a circuit down with L3 for about a day and a half in downtown Denver -- there are at least a few other customers off that same switch and their ckts are down too. I'm waiting to see if the L3 guy who roams this building is around today since their NOC seems to be...kind of unhelpful at the moment. Wouldn't be surprised if Intelepeer was showing down in Denver over L3, they're just down the street...('cause you know geographical location matters SOOO much with these issues) :)

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Level3 issues?
by peeip989＠gmail.com Aug. 2, 2013

Aug. 2, 2013

We lost connectivity to a dozen Level3 voice gateways, plus one to Intelepeer. Given the simultaneous nature, I gotta assume this is an IP routing issue, not a voip gateway issue, yet our interface and BGP routes with L3 appear sound. Anyone else seeing this, or are we the lucky ones? Also heard that Time Warner is having some issues. Possibly related?

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