Polycom Soundstation 2 disconnects during calls

That Polycom runs off of Analog dial tone.
Either a dedicated line or in most cases from an ATA off the phone system.
You should be calling your vendor/tech in that handles the phone system to check programming, cabel, jack and the Polycom itself too.

change the battery

You need to update the software on the device. I called their support line and the tech explained everything. This has been a common problem with this conference phone.

Hello Edward,
This is a known issue with this product that requires a software upgrade to resolve. Please download "SoundStation2W Software Upgrade" from the Product Support page of our website and follow the included instructions. If you need any assistance please don't hesitate to call for assistance at 1-888-248-4143 Options 2, 4.

Regards,
James

It would depend on if this is going through the phone system, or just a phone line all by itself.

If on the phone system, there should be a conference button, that is like a "flash" button on your home phone.....

What system is the phone on?

You need to buy a Computer Calling Kit from Polycom. That is essentially a cable with a 2.5mm connector to the Polycom Soundstation 2W on one end and two 3.5 mm connectors to the PC Sound card end (one to the Microphone port and the other to the Speakers port).

repeat you setup for all station you want to connect to it.

How can I add 3 other people on the conference call using a Polycom Soundstation?

The conferencing capability to bridge 2 (or more) external stations comes from the telephone equipment/service that you have purchased. Either you are behind a PABX or Electronic KSU, which provides multiple phone service to your office, or you purchase conferencing capability from your local telephone provider (Verizon, AT&T, etc). In either case, the way to initiate a conference call would be the same as when you would have a desktop/office phone and establish a conference/bridged call to external parties. Usually this occurs by having one party on the line, flashing the disconnect button momentarily, getting a new dial tone, dialing and connecting to a second party, then flashing the disconnect button again, which signals the equipment to bridge those two calls to your station.  On the SoundStation EX there is a Flash button that provides that capability of momentarily flashing the disconnect button.  Try and see if that works. If not, then you will need to make arrangements to purchase the external equipment or service from your provider.  If you have the PABX or electronic KSU, it may also be a configuration option that you will need to have your support person for your telephone system, activate for that station connected to the SoundStation EX. Hope that helps.