Tom Keating : VoIP & Gadgets Blog
Tom Keating
CTO
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Polycom

Cracking IP-PBX SIP Passwords - Be Afraid!

June 28, 2010

A few years ago I had an email conversation with Chris Lyman, the former CEO of Fonality, the makers of trixbox IP-PBX systems. I expressed concern that their trixbox Pro system was using the MAC address both for the password and the username, which for obvious reasons isn't very secure.

Below is the email conversation slightly edited for security and clarification reasons, followed by some further thoughts on SIP security:
________

Chris,
Security is going to be a huge competitive advantage after we see some high profile VoIP intrusions.

How bout forcing users to change their voicemail PIN after X number of days? TMC's voicemail was hacked many years ago. (see link/story below)

More importantly, how about automatically changing extension passwords every month and then flash all of the phones with the new passwords at 3am?









Yealink SIP-T28P Review

June 24, 2010


Yealink
, a Chinese manufacturer of IP phones is starting to make inroads in the U.S. market with their line of VoIP phones. Several months ago Yealink sent me a Yealink SIP-T28P IP phone to review. The SIP-T28P is a 6-line phone sporting a large 320x160 LCD screen and has full HD voice support (wideband codec, wideband handset, wideband speakerphone) .

AudioCodes SPS Brings Microsoft OCS Features to Legacy SIP Phones

March 16, 2010


Some very interesting news from AudioCodes with the launch of AudioCodes' SIP Phone Support (SPS) for Microsoft Microsoft Office Communications Server (OCS). AudioCodes is well known for their VoIP gateway products - well think of SPS as a gateway between SIP IP phones and Microsoft OCS. Essentially, AudioCodes' SPS enables connectivity to Microsoft Office Communications Server using standard SIP IP phones, which then adds OCS's powerful UC functionality, including presence into your existing IP phone infrastructure.

You get even more powerful features if you use AudioCodes phones, including support for Microsoft's wideband RTA codec. SPS enables the connection of the AudioCodes 300HD IP Phone Series with Microsoft Office Communications Server, while providing Office Communications Server features, such as enhanced presence, active directory, and support for Real Time Audio (RTA) - Microsoft's high-definition, wideband coder.


Rich Tehrani kicks off the keynotes at ITEXPO

January 20, 2010

'VoIP' Named Industry of the Decade

December 23, 2009


According to IBISWorld, VoIP was named "Industry Of The Decade" besting even the search engine industry? Surely, you jest. You mean to tell me the VoIP industry beat Google's, Yahoo's, and MSN's (now Bing's) billions? VoIP even beat online dating.

Well, it's true.


Positron Telecommunication's Innovative Asterisk-on-a-Card

December 17, 2009


In the January issue of Internet Telephony Magazine is a TMC Labs review of Positron Telecommunication Systems V114 analog PCI "Asterisk-on-a-card". They also have an ISDN version and a E1/T1 version. I thought I would share the review here since this is a very innovative product. It is pretty cool to have Asterisk running on a PCI card with some very interesting benefits.

But I won't steal my own review's thunder...


Tandberg Enhances Movi, But Will Cisco Slam the Video Interoperability Door?

December 8, 2009


Videoconferencing is becoming more critical to businesses, especially with many enterprises employing remote teleworkers. As such, having high-quality HD video has become a requirement, as is the ability to simultaneously collaborate within the videoconferencing session.

Well, today, TANDBERG announced new advanced capabilities for Movi, its business-quality PC video solution. Movi offers the ability to share content, HD video, we well as full audio capabilities and centralized management. Movi's key new feature is the ability to share PC content with other session participants.

I'll just reiterate my concerns about Cisco recently acquiring Tandberg, where I thought perhaps Cisco could take Tandberg's various industry standards-solutions and make them closed/proprietary solutions.




Digium|Asterisk World Expands At ITEXPO

December 1, 2009


TMC
and Digium announced that all exhibit space sold out at their expanded Digium|Asterisk World, scheduled to take place Jan. 20-22, 2010 as part of ITEXPO East in Miami, Florida. Recently, TMC was forced to expand the Digium|Asterisk World exhibit showcase since all 16 spaces originally allocated had been sold. There are now 21 companies participating. Just goes to show you that the open source Asterisk movement is still growing strong even with current economic conditions.

I'll never forget my November 2001 column where I went "In Search Of A Linux-Based PBX" and when I first discovered Asterisk and was smitten by the prospects of an open source PBX.

Cisco Buys Tandberg, but does Video Interoperability Suffer?

October 1, 2009

Cisco bought Tandberg, a video conferencing company for $3 billion. But is this good for the video conferencing industry or bad? Let's have a recap of Cisco's "openness" and adoption of standards.

First, Cisco was very late to adopt the SIP standard, finally embracing third-party SIP phones back in 2006. However, Cisco plays some serious licensing shenanigans that make it very cost prohibitive to use 3rd party SIP phones with Cisco CallManager.

Polycom VVX 1500 Video Phone Quick Demo

September 29, 2009

Check out the quick video recording I made of two Polycom VVX 1500 IP video phones making a test video call. I used an iPhone 3GS to capture the video of the test call between the two phones. The iPhone's video recording quality isn't too shabby, but doesn't truly give you an idea of the quality of the Polycom's VVX 1500 touchscreen. (Note: The video phone was tilted far back, so it was aimed directly at the fluorescent lighting in the ceiling.
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