Archive for April 18th, 2009

Polycom IP phones are a little troublesome when it comes to headset compatibility

If you have a Polycom Soundpoint IP phone such as the Polycom 300, 301, 430, 500, 501, 550, 600 (rev. E or later), 601, 650 or 670, you’ll want to read on.

The good news is that these phones are headset-ready so you can simply plug a headset right into the dedicated headset port BUT (and that’s a big BUT), most of them will give you a nasty buzz sound. The only model that Plantronics has successfully tested and recommended is the Supra Plus with the Polaris cable. There are several Supra Plus models to choose from but they are all headband style (so if you are an ear hook person you are, unfortunately, out of luck).

Here’s the link for all the appropriate headsets and the cable for you to consider:

2 comments April 18th, 2009

Quick Reference for all of the correct settings for Plantronics CS50, CS55, CS70

Don’t want to read the entire users guide to figure out what’s wrong with your Plantronics CS50, CS55, CS70 or CS70N? I’ll make it as easy as 1-2-3 for you:

On the side of the charging base tower you’ll see a round dial with numbers on it. Line up the dial so that the number 1 is directly lined up with the raised horizontal plastic ridge to the right of the dial. This is the correct configuration setting for almost all phones in the US. Trust me. Don’t wonder about it. Just set it to 1.

Now, turn the charging base tower upside down and you’ll see a slide switch with ABCD. Set that to B. This is the outbound master volume (how loud you sound to the caller).

Next, on the back of the baser tower you’ll see another slide switch with 1234. Set that to 2. That is the incoming master volume (how loud the caller sounds to you).

You’re all set! If you hear echo when you speak, then use the down arrow button on the back side of the base tower. Press “down” arrow button several times until the echo goes away.

If you need to adjust the incoming volume, do so up on the earpiece (black rocker switch).

Need more help with your headset set up? Click here.

4 comments April 18th, 2009

Tried plugging Plantronics CS55 into Cisco IP phone headset port. Why doesn’t it work?

The Cisco IP phones (series 7940, 7941, 7960, 7961) have a dedicated headset port on the back and a headset button right on the front of the phone. If you buy a wireless headset like the CS55 or CS70 WITHOUT also buying the optional HL10 handset lifter, then you will plug the CS55 base into your Cisco phone’s dedicated headset port and you must change the configuration setting on the CS55 base tower to number 4. This is the round dial with the slit down the middle which is located on the left side of the CS55 base tower. Turn the dial until the number 4 is directly lined up with the raised plastic ridge to the right of it. When a call comes in, turn on your headset by pressing the button on your earpiece and also press the “Headset” button on your Cisco phone to answer the call. Press the same buttons to end the call. You obviously won’t be able to answer or end a call while away from your desk since the Headset button on your Cisco desk phone is acting as your hookswitch.
On the other hand, if you have a wireless headset AND you also have purchased the optional HL10 automatic handset lifter, then you will ignore your phone’s headset port and headset button completely. You’ll plug your wireless headset into your Cisco phone’s handset receiver port and your handset receiver into the other port on the bottom of the wireless headset base tower marked with a symbol of a handset receiver. In this set up you will want the configuration dial on the left side of the base tower to be turned to number 1 so that the 1 is directly lined up with the raised plastic ridge to the right of the dial. When a call comes in you have one-touch call answer/end capability by just pressing the button on your earpiece. No need to press any button on your Cisco phone, so you can answer/end from anywhere in your 300 ft. range.
Here’s the link to Founders Telecom for all the Plantronics CS55 and a link to the Plantronics HL10 handset lifter if you need it.

24 comments April 18th, 2009

What headset can you use with a Cisco 7920 or 7921 cordless phone?

There is a 2.5mm headset jack on the Cisco 7920 and Cisco 7921 cordless phones, however, you may have already discovered that it is not a standard 2.5mm jack. Surprise! Why do they do this sort of thing? Is it just to drive people crazy? Perhaps. But fret not, we have the answer. The standard 2.5mm plug has 2 black bands on it. The non-standard 2.5mm plug has 3 black bands and that’s what you need in order to make all the necessary connections inside the jack. You need any Plantronics H-series headet along with a special connector cable Plantronics part #65287-01 and that’s all there is to it. Plug and play. Here’s the link:

April 18th, 2009


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