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A Reader Question About A Grandstream BT-200

Grandstream-BT-200Last week I received a question via email from reader Marshall Wilgard. It seems that he is having trouble with a Grandstream BT-200 desk phone.

For five years, I used a Grandstream BT-200 IP phone without any problems.  Six weeks ago, a loud hum appeared on the phone as soon as I picked up the handset.  About 10 days later, the hum vanished, for no apparent reason.  However, about 10 days after that, the hum came back, for no apparent reason.  Despite my rebooting the phone three times, the hum remained.  Then approximately 10 days after the hum returned, it vanished again, for no apparent reason.  My phone has had the latest firmware for more than a year, and my VoIP provider says the problem is not with it.

Hum like Marshal describes is usually an analog phenomenon, not something that I’d associate with firmware. It sounds to me like a problem with the hardware. Issues of hum tend to revolve around a problem with the power supply. Given the age of this phone I’d guess that most likely some kind of capacitor is failing.

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Polycom’s VVX-500 Finds A Home On My Desk

polycom-vvx500-300px At long last I’ve purchased a Polycom VVX-500 for my desk. A year ago I participated in the beta program for this outstanding desk phone. A such I’ve had one to use well before they launched in October 2011.

However, Polycom devices involved in a beta program ship with a boot loader that will only load beta firmware. Once the device was officially shipping and release firmware available I could not longer update the VVX in my possession. This wasn’t initially an issue, but when OnSIP started to support Polycom UC v4.0+ firmware with their provisioning server I thought it would be good to more completely integrate my desk phone with our OnSIP account.

I might like to review the VVX-500, but that seems a little weird. As I was involved in the beta program I was bound by the companies standard non-disclosure agreement during the period of the beta. Once the device launched various other people reviewed it. I’m not sure that it’s worth my time to commit to a full length review, but there are some items worth noting about the VVX-500. I can certainly point these out from time to time.

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Tip For Adding An Expansion Handset To A Gigaset C610A IP SIP/DECT System

In recent weeks there has been a long running thread over at the DSL Reports VoIP forum. It revolves around differences in the menus on the handsets the ship as part of a Gigaset C610A IP SIP/DECT phone system vs C610H expansion handset.

The menus on the handset show or hide certain options depending upon how the handset was intended to be delivered. It might deliver as part of a C610A IP system, in which case the menu option to “Select Services” is shown. The handset may be configured to deliver as part of a Gigaset C610A-L410 combination. Since that system is not IP-capable the “Select Services” menu is not shown on the handset.

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Review: Invoxia NVX 610 Speakerphone

Invoxia-Desk-Phone-Logo-300px Invoxia’s NVX 610 is a curious device. In some ways it defies description. Is it an iPhone/iPad dock? Is it a desk phone? Or is it a conference phone?

In truth, it’s all of these things. The question is, can it very good at all those functions? Or any of them?

These questions are what prompted me approach Invoxia for an evaluation unit. This review arises from the my experience with that device over the past eight months.

Let’s begin by considering a little bit about the company. Invoxia are a French company with strength in design and engineering. Amongst their team you will find considerable experience in telecom. In the past they have been involved in projects for BT and the French multi-national Thomson, including the SIP/DECT hardware that Comcast rolled out as part of its HomePoint offering.

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Doug Mohney On The State of HDVoice

HDVoice News & Invoxia-Desk-PhoneThe VUC call on Friday, June 29th will feature Doug Mohney of HDVoice News. With over 20 years of telecom experience Doug truly is a veteran in the realm of IP communications. Having appeared on VUC calls twice previously (Feb 4, 2011 & Aug 14, 2009) he’s also becoming a VUC repeat offender.

This weeks discussion will focus on the evolving state of HDVoice as described in HDVoice 2012: Proliferation. This is the latest version of his annual report on the state of HDVoice, published by TMC.

I’ve read through this years report. It’s a great summary of state of HDVoice deployment. It covers the issue from a variety of angles, presenting sound insights useful to  corporate telecom managers, service providers, manufacturers and start-ups in the ITSP space.

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