Through the regular use of Mobile and Fixed-line telephones, we have become accustomed to a very high level of audio quality.
For software-based telephony, the exact same high expectations exist. For you to achieve the Quality levels when using Microsoft's Unified Communications solution, we recommend that use implement Microsoft Certified devices. You can find the devices under the following link:
Where can you order these devices in Switzerland? A good address is:http://shop.suprag.ch/bin/srves.exe/loadHTML?file=..|v3_webdesign|templates|group.htm&UID=400134_143B3F0BAF28&$loadhtml?file=..|v3_webdesign|deutsch|sprechgarnituren.htm