October 2009 - VoiceOps - lists.voiceops.org

BW install process
by hiersd＠gmail.com Oct. 19, 2009

Oct. 19, 2009

I'm grinding through the BW (r14sp9) install process, and have noticed a fair amount of variability in the outcome. I'm holding the process constant (as far as I can tell), but sometimes the install breaks, sometimes it does not. If you've installed BW many times, have you ever noticed this kind of variability? Thanks, David

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seeking voice provider
by mark＠noc.mainstreet.net Oct. 16, 2009

Oct. 16, 2009

I'm looking for a voice provider that can satisfy the following requirements: a) same USA-footprint as GlobalCrossing and Level3 (i.e., likely "downstream" from both). We'll need to port thousands of DID, currently served by GLBX and Level3, don't want *any* issues. b) able to provide PRI in 55 So.Market, San Jose, preferably with just an in-building x-conn. c) no issues with faxes traversing network, unconditionally (i.e., with same reliability as PSTN). Bonus: d) has rapid DID provisioning for USA-based numbers. Any suggestions? Please email me directly and don't spam the list. Thanks, -mark

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Problems with defective Adtran TA900s
by owen＠impulse.net Oct. 16, 2009

Oct. 16, 2009

Hello, We deploy the total range of Adtran TA900s as CPE feature-rich boxes, and in general like the product. However, of the last 25 Adtran TA 900s we've deployed, we've had 6 with confirmed hardware defects where the symptoms range from the obvious hardware crashes, to much trickier and costly bugs to find, such as bad DSPs, and one that had a bad clocking chip. Adtran claims I'm alone in this, and it's gotten to the point where I'm seriously considering building a quality control TA900 tester in the lab to torture all prospective field boxes. Anyone notice anything like this percentage of defects? Regards, -- Owen Roth Network Engineer Impulse Internet Services http://impulse.net/customer-support mailto:owen at impulse.net Tech Support: 805-456-5800 w: 805-884-6332

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Carrier Grade Junk
by lunchhound9999＠gmail.com Oct. 16, 2009

Oct. 16, 2009

Ever noticed how the phrase "carrier grade" gets tossed around by vendors? They ship so many lethal bugs that all it means now is that they're going to try to charge "carrier prices" for their crap. Really, sit down and read the full set of release notes of the current version of any of your "CG" products. Read them in their entirely, and get a sense of how they describe the flow over the product through time. For a real jolt, play the fortune-cookie game with them. You know how you can append the phrase "in bed" to any fortune cookie fortune to make it even funnier? Try adding the phrase "in production" to the end of every defect notice. "Blah-blah-blah sipd stops - in production". "Blah-blah-blah core java process stops - in production". "Blah-blah-blah invalidates registrations - in production". "Blah-blah-blah reboots after 99 days - in production".

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Testing waters with the ADTRAN TA5000 box
by ssrinivasan＠telesphere.com Oct. 15, 2009

Oct. 15, 2009

Folks, We are considering roll out of the TA5000 box and are in the research phase. ADTRAN sells it as an entry level multi-service CO box. Has anyone out there done comparative studies of this box with other vendors in terms of service flexibility, scaling and pricing as far as delivering of EFM and EoC services are concerned? I'd like to hear some alternative vendors.... SANJAY SRINIVASAN 480.385.7062 (Anywhere) | 480.385.7064 (fax) | ssinivasan at telesphere.com<mailto:ssrinivasan at telesphere.com> | www.telesphere.com<http://www.telesphere.com/> 9237 E. Via de Ventura | Suite 250 | Scottsdale, AZ 85258 [cid:image001.jpg at 01CA4D64.02A8B680]

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Cisco PGW 2200 replacement options
by KevorkB＠francoudi.com Oct. 15, 2009

Oct. 15, 2009

Hi , I am looking into alternatives to PGW. Basically I am looking for a Class 4 switch that does SS7, SIP and H.323 (if possible MGCP also). Any suggestions? Kevork Belian

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IPLD Carriers
by BrandonB＠netins.com Oct. 14, 2009

Oct. 14, 2009

We're looking for some additional IPLD carriers and wondered which ones everyone has had good results with. It would be for SIP outbound only U.S. toll and international. Thanks, ---- Brandon Buckner Switching Technician / VoIP Admin Iowa Network Services brandonb at netins.com<mailto:brandonb at netins.com>

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Interesting reading
by hiersd＠gmail.com Oct. 14, 2009

Oct. 14, 2009

Saw this come over on an asterisk group: http://www.honeynor.no/2009/09/20/citibank-uk-number-was-target-for-a-lawnm… David

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Voice Security in MPLS networks -- When is it necessary?
by Guy.Ram＠t-systems.com Oct. 14, 2009

Oct. 14, 2009

Hello, Like your kind response to this question: Would folks agree that for SIP traffic in a private MPLS network should not necessarily require encryption. What is your advise for the normal Enterprise ? I'm trying to understand where it makes prudent sense to enable encryption and where it's redundant. I'm trying to counter this statement: that encryption of the media stream should be encouraged. Although the MPLS network is private, it is easy to setup a traffic sniffer on computers and to tap and record calls. This is unlike the ISDN world where telecoms equipment is usually locked up and inaccessible to most employees. Companies do accept encryption as normal overhead" What I've been told that most enterprise networks are switched, so the connection from the desk goes to a switch and then right to the VoIP system, so it's basically non-trivial to tap a phone line that way. VoWiFi is different, but there are more issues than security with that. Legacy environment equivalent for wired VoIP. Also that Encryption will increase delay, reduce quality, and increase BW consumption. I don't see a lot of need for encryption except across a peering point for example. Thanks, -guy

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ACME Contact Header rewrite
by lriemer＠bestline.net Oct. 7, 2009

Oct. 7, 2009

Anyone know how to disable the Contact rewrite? I'm trying to build a PBX in a Metaswitch and the configured SIP binding has an ACME as it's proxy. I have outbound working fine, but it breaks on inbound as the MS is looking for the PBX IP in the Contact header, not the ACME's. I understand the point is for the signaling to come back to the ACME, but the proxy setting in the SIP binding takes care of that. Lee

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