For IP based H.323 calling between SX series: The following ports are applicable for conference between SX series Cisco TelePresence only. Screenshot from SX series under System Configuration > H323 For SIP based calling between SX series: Important note: If the other party uses MXP Continue Reading
Cisco TelePresence
Cisco TelePresence SX80 PrecisionHD 1080p 4xS2 Connection
Cisco TelePresence SX80 SpeakerTrack 60 Connection
Ref: Cisco TelePresence SX80 Installation and Administration Guide   køb cialis;