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911 testing
by caalvarez＠gmail.com Jan. 21, 2018

Jan. 21, 2018

Do you have your customers do a 911 test? And if so, what procedure do you advise? Some cities don't care if you call 911 and say it's not an emergency, others, like NYC, will flip their shit (I've been told). I'm updating all of our new-client testing docs and trying to figure out a solution that works anywhere.

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Innomedia MGCP
by voiceops＠ics-il.net Jan. 8, 2018

Jan. 8, 2018

My initial message (LNP related) didn't make it and is no longer relevant during my list troubleshooting, so I'm going to ask about something else. I am looking for users of Innomedia MGCP devices, specifically the MTA6328s (various port sizes). I've tried various tactics, but Innomedia is not providing any support of any kind for their MGCP devices. I cannot buy support, they will not give anything away. I'm just looking for documentation and a more recent firmware version. They wouldn't send me anything. I recently took over a network with a bunch of these units and I'm in fire-putting-out mode. Once I get the fires put out, I'll be ordering some new units of something. Guess what manufacturer isn't going to be in the running due to their quality of support. Anyway, feel free to offlist me if you have these things available. I literally have exhausted any other way including working with Innomedia. ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest Internet Exchange http://www.midwest-ix.com

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Neustar Port PS Alternative?
by robert.j＠bendtel.com Jan. 3, 2018

Jan. 3, 2018

Nuestar's Port PS is now a paid service and I have been tasked with finding quotes for competing services. Iconectiv was my first choice, but I have been informed their tool is not yet available. What other options are out there?

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Incoming CenturyLink issues
by frnkblk＠iname.com Dec. 26, 2017

Dec. 26, 2017

We've been receiving calls this morning from our customers that are having trouble with incoming calls from CenturyLink customers. We're not sure if it's just those PIC'd to CenturyLink and/or who use CenturyLink for local service, but our customers are experiencing one-way audio. Our upstream tandem says they see calls coming in with "Timer Expired", and they're all PIC'd to 0432. Frank

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Grass Lake, MI
by paul＠timmins.net Dec. 18, 2017

Dec. 18, 2017

An HTML attachment was scrubbed... URL: <https://puck.nether.net/pipermail/voiceops/attachments/20171218/4610ca03/at…>

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Grass Lake, MI
by jschmidt＠giganection.com Dec. 18, 2017

Dec. 18, 2017

Does anyone know of a carrier that can port numbers from Grass Lake, MI. It is Frontier North. 517-522. We use Inteliquent and even though it shows they service that rate center and have numbers there, we are getting an automatic rejection from them saying they can't service it.

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remote hands in Mexico City
by shripald＠gmail.com Dec. 4, 2017

Dec. 4, 2017

Hi All, I have a customer in Mexico City and i need a telco tech to trouble shoot an IAD with FXO. Can anyone recommend a someone or some co that would be able to help? thanks! shri

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Anyone from TMO monitoring?
by mwiles＠akabis.com Dec. 1, 2017

Dec. 1, 2017

Is anyone from T-Mobile monitoring? We're running into an issue where a call that's handed-off to TMO gets back a "480 Temporarily not available", of course failing the call. I've compared a call where this isn't happening with a call where it is, and the only thing I see different (other than access IP's) is that on the "bad" call, the audio's set to INACTIVE, but on the "good" call, the audio is SENDRECV. Any thoughts or input would be greatly appreciated! Thanks, Mark

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Feedback request - Redshift Networks
by bmurray＠transbeam.com Nov. 22, 2017

Nov. 22, 2017

Hello Folks, Wanted to reach out to the group to see if there was any knowledge of this vendor and their product. -What?s good about the product? -What?s bad about the product? -Any information on company size? ?Specifically their support and their support structure? -What type of environment do you or someone you know have this product installed? -What is the primary function this product serves for your company? -Could you provide some rough numbers on traffic seen by this product? Calls per second / day / month -If you were the decision maker, why did you choose them and what other products where being evaluated? http://www.redshiftnetworks.com/ Happy Thanksgiving! --------------------- Brian J Murray

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SUBSCRIBE/NOTIFY method for CNAM querying
by abalashov＠evaristesys.com Nov. 17, 2017

Nov. 17, 2017

Hello, SIP redirects are the generally accepted transport for generic data queries (e.g. LRN dips, CNAM) over SIP. However, there is another method, which is used by Metaswitch, Sansay, and possibly some other softswitch vendors: the SUBSCRIBE-NOTIFY method. This is one in which an ephemeral presence subscription (i.e. with an Expires: value of 0) is created by the querying switch, and the CNAM gateway returns a NOTIFY some time later containing the CNAM data reply some time later in its body. The most complete explanation, including some limited insight into design rationales, is available from Neustar, who offer this query method: https://www.neustar.biz/resources/cnam/data-services-lidb-user-guide.pdf See Chapter 7 - IP-CNAM Speification (page 25). This is a weird and, in my opinion, ill-conceived mechanism[1]. Nevertheless, it is widely implemented. What I can't seem to figure out is where the formal definition of the standard comes from. It's certainly not an IETF RFC. The Metaswitch CFS provides a hint: MetaSphere CFS and Metaswitch MGC support performing Caller Name Database (CNAM) lookups by sending SUBSCRIBE messages to a database server, and receiving NOTIFYs containing the caller name. The specification of this interface is non-Metaswitch proprietary information. However, example message flows are shown in A.4.16. Whose proprietary information? I found this Verizon patent: https://www.google.com/patents/US20080240383 But it appears to be concerned with an adaptation layer of this to the ISCP side, though I only skimmed it. And if this is the patent in question, why don't any footnotes in vendor docs refer to it? The footnotes cite the SIP event pub-sub framework (RFC 3265) and little else. What the heck is it? And why did it get to be preferred over redirects for some vendors, especially given that it invokes ? but ultimately foregoes ? most of the bureaucracy of the event subscription mechanism, in a way that's seemingly contradictory. -- Alex [1] For one, it uses attributes in the encapsulated payload which look like headers, but aren't headers: Calling-Name-Status: available Calling-Name: ?Joe Smith? <sip:9726840623 at cnam-subscriber.com;user=phone> Presentation-Indicator: allowed Why bother with an encapsulated body, then? [2] More objectively, a SUBSCRIBE creates a dialog. But if the lifetime of the subscription is zero (expires immediately), presumably the dialog it creates also ends immediately. Why, then, does the NOTIFY have to be structured as an in-dialog NOTIFY (i.e. same From/To tags as the SUBSCRIBE)? -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/

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