Sold Out 09|Telephony|Access Control|Doorphone (Intercom) Grandstream SIP Doorphone intercom with RF card reader GS-GDS3705 R5,557.86 (Incl. VAT) Sold Out The Grandstream GDS3705 is a SIP door phone intercom, built for users looking for a strong audio-only facility access and security monitoring solution. It can be deployed in environments of all sizes and features a dual microphone and HD loudspeaker. It also supports SIP calls to IP phones and has a built-in RFID chip reader and keypad for secured... View