- VoiceOps - lists.voiceops.org

Cisco 7941 SIP
by peeip989＠gmail.com Oct. 8, 2015

Oct. 8, 2015

Greetings Voice Operators, We have an interesting (code word for annoying) challenge that we've never dealt with before, probably because we don't do much with Cisco phones. We have a new customer coming on who wants to keep their very old Cisco 7941 phones. They have a few offices and the phones work as expected behind an Edgemarc. However, they also have 100+ home users, and that's where the issue comes in. Apparently Cisco introduced a security "feature" where they create the session using a random high numbered port (e.g. 49123) but in the Via header, they say to respond to *private IP, port 5060*. So when the SBC sees the private address it assumes it is being NAT'd through a firewall and replies back to *public IP, port 49123*. What we're seeing is that the home router passes the response back to *private IP, port 49123*, which the phone doesn't accept (because it wants it on 5060) and the REGISTER fails. As you know most home routers are poor at handling ALG (and we've tested and found they are equally bad at handling this scenario). We (and the customer) don't want to troubleshoot 100+ individual home routers. We haven't found a way to turn off this really awesome "feature" so we're trying to find other solutions. Anyone been through this and have any suggestions? Thanks, Pete

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Lack of Quality Industry-wide
by beckman＠angryox.com Oct. 7, 2015

Oct. 7, 2015

In the last 3 months I've been consistently frustrated by my carriers. "3-4 minutes is acceptable delay for delivery of SMS messages." "Our termination change now throws 504s instead of 503s 20-50% of the time and adds 2-3 seconds of delay to your call attempts. We didn't notice, and though you did, it's been 3 days and we haven't fixed it. Sorry!" "There was an outage? Works for me now!" "Someone upstream is intentionally dropping SMS messages. But we can't say who it is, and we can't get them to fix it because they aren't our carrier." Does the industry just suck at knowing when their stuff is broken, or only react when enough customers complain? Do carriers simply not instrument, monitor or graph metrics of their operations and proactively monitor and fix issues? My Thresholds: * SMS delivery end-to-end: Under 10 seconds * 503 Route Advance: Under 1 second * Response/Notice to termination/API/origination/server outage: 20 minutes * Fix a major issue (or provide a fix timeline): 3 days Too many times in the last few months _I_ have been the canary in the carrier's coal mine bringing attention to places where their operations are broken or delayed. And even then, unless I escalate to management (like CEO level), things move at the speed of a sloth. Most of the time it seems I monitor my carrier's infrastructure more closely than they do. I hope and dream of the unicorn carrier -- such great operational awareness and execution that it doesn't matter how great their customer service is, I'll never have to talk to them. Beckman --------------------------------------------------------------------------- Peter Beckman Internet Guy beckman at angryox.com http://www.angryox.com/ ---------------------------------------------------------------------------

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Please remove me from this list
by gwenzit＠gmail.com Oct. 6, 2015

Oct. 6, 2015

-- Greg Wenzel, CCNP Voice

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Unique DIDs vs. Custom extensions
by rafaelpossa＠gmail.com Oct. 6, 2015

Oct. 6, 2015

Hello all, I was tasked to design a system that would give each end user a unique DID from a pool of about 1,000 DIDs total. Every inbound call to a DID would then be forward to the end-users actual phone number (office, mobile, etc..). We would then make data driven decisions based off of the data collected from all these inbound calls: duration, originating area codes, how many calls, frequency, etc.This of course would have previous authorization of each end-user. WIth that in mind, to me it looks like a big waste of DIDs, and I could use custom extensions instead, with a single DID for everyone. Each end-user is assigned a 5 digit code (an extension pretty much) and gets re-routed accordingly. I believe using Asterisk and/or FreePBX I could still collected all the data that is needed. Estimated inbound minutes is 500,000 a month, so that requires another 500,000 outbound minutes because each call is forwarded. One million minutes a month does turn out to be expensive, close to U$8,000/month from some quotes that I have gotten. With all of this in mind, I'd like to know if anyone here has done a similar project and would be willing to share their experience. I am trying to accomplish everything with the minimum amount of resources as possible (money and DIDs, etc). Thank you in advance! Best regards, Rafael

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Gafachi down? Or gone? (from asterisk-biz list)
by beckman＠angryox.com Oct. 6, 2015

Oct. 6, 2015

Forwarding to this list for visibility. On Tue, 6 Oct 2015 11:07:18 Hermann Wecke <hermann at ...> > I read a while ago that Gafachi was running out of business [1], which > at that time was wrong. > > But since yesterday, all my DIDs are dead and their numbers are also > dead (the toll free number has been disconnected). Their web portal is > also dead. Not replying to emails. > > Anyone have any information? > > [1] http://lists.digium.com/pipermail/asterisk-biz/2015-May/036647.html

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SIP software developer
by peeip989＠gmail.com Sept. 30, 2015

Sept. 30, 2015

I'm looking for Java software developers with experience writing large-scale SIP applications. Looking for a full-time hire. If you or someone you know is looking for such an opportunity please contact me off-list. Or if someone knows of a better list to post this please point me in that direction. Thanks in advance.

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Full Mesh Voice and SMS Testing
by beckman＠angryox.com Sept. 30, 2015

Sept. 30, 2015

I'm curious how people test Voice and SMS connectivity for their DIDs, and how often these tests are done. I currently have a system in place that tests Voice connectivity using a specific valid-but-unused CallerID value, and I place calls through off-net carriers to my DIDs in order to ensure call completion. Additionally I am using an off-net SMS provider to test that SMS connectivity works to my DIDs. Is anyone doing regular, ongoing, full mesh tests for Voice and SMS connectivity? E.g. For a Verizon DID, you might do a test call from AT&T, AT&T Wireless, Sprint, T-Mobile, Level3, Comcast, CenturyLink, Cox, Charter, Windstream, Frontier. For SMS, you might test from the big 4 plus an offnet SMS provider like Plivo, Twilio, Nexmo, etc. I'd love to hear how you ensure high quality customer experience behind the scenes, fixing problems BEFORE the customer knows there is one. Obviously an incoming call or SMS to a DID is usually enough to not warrant a test. But for quiet DIDs, what do you do? Beckman --------------------------------------------------------------------------- Peter Beckman Internet Guy beckman at angryox.com http://www.angryox.com/ ---------------------------------------------------------------------------

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Verizon RTP issues
by peeip989＠gmail.com Sept. 29, 2015

Sept. 29, 2015

Anyone seeing issues with Verizon and no audio/poor quality? We are seeing it across 11 local gateways across the US. Inbound TF trunks appear ok so far.

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Seeking phone system recommendations
by graham＠nerdventures.com Sept. 29, 2015

Sept. 29, 2015

Hi, folks, Can you recommend a managed telephony vendor? Client characteristics: * Several locations in the US, in multiple states. * Total of a few hundred seats. * High tens or low hundreds of thousands of minutes. * Prefer to trunk to vendor via existing reliable multi-hundred-megabit and/or gigabit internet connections. Dedicated link is a possibility if necessary. * Ideal to continue using existing Polycom SIP phones. * Vendor should have monitoring that is as proactive as possible. SIP packet loss? Call drops? Call completion failing? Low MOS scores? To the extent technically and commercially feasible (IMO, it's feasible), vendor should be the first to notify client about these issues and path/timeline to resolution, instead of waiting for client to complain. * Operator panel that is at least as capable as Shoretel Communicator (version 13). Ideally modern HTML5 web-based, not based on ancient vulnerable tech (such as Flash or Java). Client has a good IT team, including folks with telecom experience, but would rather have a managed telephony vendor instead of staffing up more telecom expertise internally. Client prefers to handle end-user tier-1 (and sometimes tier-2) helpdesk issues internally, and have in-house IT/telecom staff talk to telephony vendor about any issues that can't be handled internally. (In other words, this is a great client for a telephony vendor that can build and maintain a reliable and properly monitored telephony infrastructure.) Client is accustomed to deploying phones with LLDP-MED, putting phones on a separate voice VLAN with a vendor-managed router handling that VLAN. Client would love to see provisioning (e.g. new phone) and management (e.g. password resets) as automated as possible. Current vendor has a very manual (and time-intensive and error-prone) process. If you respond via email off-list, I'll summarize the responses on-list in a few days. (Please, don't call or text me about this unless we've made an appointment to discuss.) thanks, Graham Freeman, Principal Nerd NerdVentures.com graham at nerdventures.com https://www.linkedin.com/in/grahamfreeman Twitter: @get_nerdy

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Level3 Sales Contact?
by beckman＠angryox.com Sept. 29, 2015

Sept. 29, 2015

Anyone have a good Level3 Sales Contact? Beckman --------------------------------------------------------------------------- Peter Beckman Internet Guy beckman at angryox.com http://www.angryox.com/ ---------------------------------------------------------------------------

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