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GN 9350 DECT 6.0 headset does PC, VoIP, and regular phone handsets

GN Netcom's GN 9350 DECT 6.0 headset is one of the most versatile headsets I have ever reviewed. When GN Netcom told me they had a new headset that did both PC audio and Phone audio, while leveraging the range and interference-free characteristics of the DECT 6.0 standard, I just had to review this headset. (Note: DECT 6.0 operates at 1.9Ghz so it is less apt to have interference from WiFi 2.4Ghz signals)

Comparatively speaking, the GN 9350 is similar in functionality to the Plantronics Voyager 510 Bluetooth headset, which I reviewed here. Both support VoIP, both can use any PC audio application, both use USB, and both are wireless. However, the similarities stop there, since the Voyager 510 uses Bluetooth and the GN 9350 uses DECT 6.0 for wireless connectivity. The advantage of the Bluetooth wireless spec is that you can use the same headset both on your PC (using the Bluetooth USB dongle) and your Bluetooth-enabled mobile phone. The GN 9350 wasn't designed for mobile phones, but rather for traditional enterprise desktop phones, which the Voyager 510 cannot connect to. Thus, these products target a slightly different target audience. Although, I should mention that Plantronics has a higher-end model of the Voyager 510 called the Voyager 510S, which supports mobile phones, desktop phones, and PC audio (VoIP) using Bluetooth.

Here's a picture of the higher-end Plantronics Voyager 510s:
Plantronics Voyager 510S

One advantage of the DECT 6.0 spec over using Bluetooth is range. When I tested the Bluetooth-enabled Plantronics Voyager 510, the audio started to get choppy just 15 feet away. On the other hand the DECT-enabled GN 9350 worked flawlessly with no choppiness even 250 feet away. GN Netcom claims 300 feet of range for the GN 9350.

Installation
Installing the GN 9350 was a breeze. You simply connect the phone wire to one of its ports, the handset cord to the other RJ11 port. I will say that connecting the phone connectors was a bit tricky because the ports are recessed about 1/2 inch in with a lip that hangs over and a tiny opening, making it difficult to get your fingers inside to clip the phone clips. I basically had to hold the wires from the outside and gingerly aim the RJ11 clips into the female ports - I felt like I was defusing a bomb like the injured "Cappy" in the scene from Executive Decision. It was then that I realized that the cover on top is actually removable making it easy to make the connections. Silly me. Under the cover I was surprised to discover an LCD display and a 4-way thumbpad allowing you to customize various features, including volume, bass/treble/normal, hookswitch selection, range/power selection, and finally protection level, which protects against sudden spikes in volume. There is also a switch for choosing which type of phone system you have. In any event, after hooking up the phone wires and playing with the LCD settings, I then hooked up the AC adaptor and the USB connector and was good to go.

Base Unit Features
On the front of the base unit are 2 buttons for switching from PC to phone and 7 LEDs. One LED indicates when the headset is charging on its base (flashing) or when the headset is in use (solid). Another LED, red in color indicates when you have the headset muted. Another LED indicates USB connectivity, another for power, and 2 blue LEDs indicate whether you are in PC or Phone mode.

Headset Features
The headset is very flexible in it's wearing styles. You can wear it headband wearing style, neckband wearing style (wraps behind your head), as well as "over the ear" wearing style. features automatic volume adjustment that sets the volume on all calls (phone or VoIP) unless you set the auto-volume protection to level 0. The headset also features noise reduction which can remove background noise from your environment.

The headset features a noise-cancelling boom mic, a charging port, and a three-way switch on the end that performs volume up/down, as well as mute when you press it in. On the outside of the headset is a blue LED that blinks when in use and is off when not in use.

In addition, your headset can also be used with DECT cordless phones, which are GAP (Generic Access Profile) compatible. You simply have to pair the headset with the cordless phone's base station by pressing the headset's talk and mute buttons simultaneously for 5 seconds after entering the cordless telephone's GAP mode. Relatedly, the headset supports a multi-unit conferencing capability. Simply start a call, then place a 2nd headset on the base unit for 2 seconds. Then remove the headset and this headset will be conferenced into the call. You can repeat for any additional 2 headsets for a total of 4 headsets in the call.

Here's an interesting feature - emergency dialing via VoIP. The base unit supports "speed dialing" emergency services using your VoIP application (softphone) simply by pressing the PC mode button and the Phone mode button simultaneously for 5 seconds. This is useful for when your workstation is locked and you're trying to shave off some seconds. Of course, I can type my password in less than 5 seconds as I'm sure most people can, but perhaps the emergency is that you injured your hand - which would make it a little difficult to do the three-fingered-salute (Ctrl-Alt-Del) to log on.

Testing
The voice quality was excellent and I was very impressed with the ~250ft range before the audio started to cut out. Overall, I was pleased with the sound quality, range, and the ability to switch from streaming music (PC) to an incoming call (Phone). If your phone is supported, you'll even hear a beep in the headset letting you know of an incoming call. If you have the optional handset lifter, it can even lift the handset so you can take the call without being at your desk. The unit also supports EHS (electronic hookswitch) to automatically answer a call, which does not require the handset lifter. Only certain phones support EHS. You can go to www.gnnetcom.co.uk/UK/EN/EHS-setup.htm to see if your phone is listed.

Unfortunately, when you set the base unit to default to the “phone”, it appears that you can't toggle from music to phone and then back to music using the headset button. You can only go from music to phone. So for example, say you are away from your desk, listening to streaming radio, and then an incoming call comes in. You click the headset’s button to switch to the phone connection, which uses the remote handset lifter to answer the call. You talk for a bit, you end the call and then wish to return back to the PC’s streaming audio. You can’t do this remotely. You have to press the button on the base unit in order to switch back to the PC audio. 

Similarly, when you set base unit to default to “PC” audio, on an incoming call, you cannot switch to the “Phone” using just the headset. You have to be physically at the base station and press the phone button.

Not a big deal, since in most cases you will be near your PC & phone (and therefore the base unit). Nevertheless, wireless headsets do add some nice office mobility, so  it would be nice if you could hold the headset button for say 3 seconds and it would toggle to the opposite (PC or phone) connection. Perhaps this is a simple firmware or software upgrade. I'll contact my sources at GN Netcom and see if its possible.

I found it a bit of a pain to put the headset back on the base unit to charge it. If you are slightly off, the charging prong hits the plastic on the headset and won't insert all the way down. I had to wiggle the headset a bit to get it to dock. However, with a little practive, I was able to get it docked on the first try about 80% of the time.

Beeping and blinking... Beeping and blinking (William Shatner - Airplane!)
When simply using the headset to listen to PC audio (music) I found that the mic picks up sounds and plays it back over the earpiece. For example, if listening to music, with the mic unmuted and you hit the mic boom with your hand, it picks up the sound and plays it over the ear piece. Or if I simply turn my head and the mic hits my cheek, it will pick this sound up. I was able to mute the mic, but then it beeps every 10 seconds which is annoying.

Beeping is a great reminder when using the phone feature – so you don’t accidentally forget you are muted, but when in PC mode, unless using a VoIP software all the time (requires the mic is unmuted), I prefer that the microphone be muted with no beeping.

Pros:

Cons
Conclusion
Even with the beeping issue and the toggling issue, overall, I was very pleased with GN Netcom's GN 9350. It is now my office headset of choice due to it's excellent range and very good feature-set. Having all these features, range, and sound quality will set you back $349 MSRP. However, I checked Amazon and I see the GN 9350 listed on Amazon for $271.99.

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Written by VoIP & Gadgets Blog on September 1st, 2006 with no comments.
Read more articles on VoIP and Wireless and Plantronics and phone and headset and pstn.

Turn your PC into a Skype gateway

SkypeTelevoce's PontiVoce (PonTEE VO-che) Server is an interesting piece of software that lets you create a 100% software-based Skype gateway that leverages the Skype API to turn your PC into a Skype gateway for relaying calls. It's worth pointing out that Skype has offered free phone calls within the U.S. and Canada to help acquire more Skype users. Using TeleVoce solution, you can extend this "free offer" to friends and family outside this free calling zone. All you do is find a friend in this free calling zone who has Skype running on his or her PC -- along with the PontiVoce server piece installed. The PontiVoce server can serve any number of users, but only one at a time. When the server PC is used to relay a call, the PC cannot be used for other Skype calls and the PC audio is dedicated to the call.

TelevoceThe PontiVoce Server consists of two Microsoft Windows software applications. The “client” software is for any PC wishing to place a call to the U.S. or Canada. The server software (gateway or relay PC) must be installed on a PC within the free calling zone of the US and Canada.

TeleVoce offers the PontiVoce Client software at no cost. The PontiVoce Server software is enabled by a software key that can be purchased at with a one-time fee of $5.95. The server software license is for a single Skype user name. Essentially, the PontiVoce Server software converts the server PC (in U.S. or Canada) into a telephone gateway, enabling the user outside the free calling zone to call any phone within the free U.S. and Canadian zone.

According to TeleVoce, unfortunately, the server PC must be in the US or Canada. I'm not sure why a user can't install this service piece in say South Africa and then this would allow users to make SkypeOut calls to local South African phone numbers and then deducting SkypeOut credits from server PC. Of course, you don't really save any money by relaying through a 2nd PC, since Skype will still deduct the same amount of SkypeOut credits. Except in this case, you're deducting from somebody else's SkypeOut credits instead of your own.

Thus, unless Skype starts offering local calling or free calls to other countries it wouldn't make much sense to go through a PC relay gateway located outside a "free zone". Of course, perhaps one day Skype will discount the per-minute rate depending on your IP address. That is to say, perhaps one day Skype will use geolocation technology (using your IP address to figure out your location) to offer a different calling rate. Using both origin and destination to figure out the charges will be just like the PSTN all over again. The nice thing about VoIP is that it's location agnostic. At any rate (pun intended), if this does happen (different rates depending on your IP address), then having a Skype software gateway that works in other countries might make sense.

Summary on how it works:
- Similar to international call-back in the old days
- App-2-App Skype API
- Sets up a conference call at the server and mutes the audio
- Note, that this is NOT call forwarding - it's all done in software

Really this software is only going to be useful for international users who make a high call volume to the U.S. and/or Canada. However, who wants to depend on someone leaving their PC on all the time and also not currently using Skype in order to make a free call? Nevertheless, I'm sure this software will have some "niche" users that will find it useful. For more details go here:

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Written by VoIP & Gadgets Blog on August 22nd, 2006 with no comments.
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Earn VoIP PSTN dialing credits by watching videos

Back in March, I had an exclusive first look at Lycos Phone, which is a rebranded softphone client made by Globe7. On Tuesday next week, Globe7 will launch a major new release of their softphone client, though they've quietly made the 3.0 software available for download now. The new version loads much faster, has a complete video library for users and allows users to earn free credits for the phone simply by watching videos. Yep, you read that correctly - you can earn PSTN dialout minutes simply by watching videos. This is the first "earn phone credits" VoIP application.  What is important to note is that they are giving credits for watching the video content, not for watching ads or clicking on the ads. I just earned $0.03 for watching 2 videos, including the Pirates of the Caribbean trailer. I calculated that I earned roughly $0.0048 per minute of watching (roughly 1/2 cent per minute).

Here's a demo of the Globe7 softphone client I captured:

In addition to the earned credit feature, Globe7 is offering 1 GB free storage space for video and photos uploading and sharing, breaking news feeds, video streaming, and other features. The product is SIP-based and the codecs they are using VP6 supported by Macromedia Flash player. They are using Akamai solution for streaming all the videos. The audio codecs are ILBC and GSM.

The launch of the 3.0 version coincides with a major marketing push in the U.S.  According to Globe7, they will initially be targeting college campuses with campus bookstore promotions in 525 colleges and universities in the U.S., as well as pre-game promotions.  That will be followed by events such as concerts for the general public including mobile kiosks where interested folks can check out the voice and video quality of the new application.  They will also be targeting communities within major metropolitan area that have a high degree of international phone call usage.

Screenshot of PSTN phone dialing screen

Globe7 Phone dialing screen

In the next two months, Globe7 will follow in the United States with the launch of its Wi-Fi capable PDA with embedded VoIP. It will be inexpensively priced and will also allow video to be received and to earn credits towards VoIP minutes. They claim that the Globe7 PDA will be priced economically enough for families to afford two PDA's, allowing them to talk PDA to PDA for free. Who needs walkie-talkies?wink Actually walkie-talkies have a range of 2 miles or more - good for the ski slopes. WiFi doesn't reach quite that far.

Of course, the "pay to watch" model may have some trouble in the VoIP marketplace with several VoIP companies offering free PSTN dialing. For instance, Skype offers free U.S. & Canada calling until the end of the year. Jajah offers free worldwide dialing, and there are a few others.

Of course, at least Globe 7 has a legitimate business model that intends to make a profit by rewarding users for viewing videos and attracting advertisers for the confirmed/tracked eyeballs. How long can the free models be sustained? Some would argue that the race to free calling has begun and it's only a matter of time before ubiquitous free calling takes place. Guess we'll have to wait and see if this "pay to watch content model" works in the VoIP space. Stay tuned...

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Written by VoIP & Gadgets Blog on July 28th, 2006 with no comments.
Read more articles on Skype and VoIP and videos and streaming and jajah and globe7 and lycos and pstn.

World PSTN Call Progress Tones Database

Telephony developers working in VoIP, PBXs, VoIP gateways, phones, modems and other PSTN technologies that are developing products internationally have to know the varying international call progress tones that differ from country-to-country. Of course, figuring out the disconnect or other progress tones isn't that difficult. Sure you could discover each progress tone's by recording the tones to a .wav file and then use a sound editor program to figure out the exact Hz -- but why go through all that trouble?

You can just head on over to 3am Systems and search their centalized call progress database to get an instant answer. They call their 'World PSTN Tone Database', which will not only tell you the proper Hz and cadence, but it will even display the proper Zaptel/Asterisk string for easy copy/pasting into your Asterisk system. They also have a Sipura/Linksys mode that will display the proper configuration string for use on Sipura/Linksys equipment. You can search on a specific call progress tone (acceptance, dialtone, disconnect, busy, fast busy, etc.), search for tones used in a specific country or search a combination of the two.

According to Brian E. Cauchi at 3am Systems, "The whole thing started as an excuse to experiment with Web Hosting, php and mySQL. In a few months the site has outgrown the server’s bandwidth, and users seem to love it, judging from ‘frenzies’ some of our visitors go into once they stumble upon our site. Many of our visitors visit because they are trying to configure regional settings for their VoIP gateways. Encouraged by the response, we’ve gone to some length to mine, sift and refine our data."

PHP and MySQL? Nice! Two of my favorites. In fact, this blog runs on MySQL and I've looking to add PHP support to TMC's blogs in the near future, as part of my "fun" project to migrate MovableType from Windows IIS to Linux.

In any event, the 'World PSTN Tone Database' is something that every telecom developer and telephony professional should have in their arsenal! Good stuff!

p.s. The Hz info is available without registering, but you can also download .WAV sound files for the individual tones. But for the WAV files you have to register first. Pretty cool to get a recording of the actual progress tones.

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Written by VoIP & Gadgets Blog on January 1st, 1970 with no comments.
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