Yealink T23G 3-line VoIP PhoneThe Yealink T23G is a nice, compact VoIP phone with room for 3 VoIP accounts. This is one account more than the Yealink T21P. The device can be perfectly combined with the other Yealink TxxP-Phones and is particularly suitable for use in a business environment (an ideal workplace device). The Yealink T23G VoIP Phone offers excellent sound quality thanks to the G.722 codec that guarantees High Definition (HD) sound (only available for VoIP telephony and if the call partner also has a G.722 compatible phone). This makes your conversation sound particularly clear.