C81
Our Products
One‐button SIP Door Phone
The C81 is an One‐button SIP Door Phone with advanced audio system with the echo cancellation function. with the C72 touch screen control pad, you can speak to visitors at any time. The C81 offers key-less control and convenience for the users opening the door without a key. The door can be open remotely if there is an electronic door lock. It’s ideal for control communication and security over internet such as business,institutional and residential applications.
Features
- Aluminum surface, Metal bottom shell
- 1 call button
- DTMF Mode: In‐Band, RFC2833 and SIP INFO
- DHCP/Static/PPPoE
- STUN, Session timer
- DNS SRV/A Query/NATPR Query
- HTTP/HTTPS/FTP/TFTP
- TCP/IPv4/UDP
- SIP over TLS, SRTP
- Configuration backup/restore
- Syslog
- SNMP/TR069
- Configuration keypad‐based management
- HTTP/HTTPS Web Management
- Auto provisioning: FTP/TFTP/HTTP/HTTPS/PnP
- Comfort noise generator(CNG)
- Voice activity detection (VAD)
- Codec: PCMA, PCMU, G.729, G723_53, G723_63, G726_32
- Wideband codec: G.722
- Two‐way audio stream
- HD voice
- Action URL/Active URI remote control
- Default auto answer
- Door Phone features
- Door Access: DTMF tones
- One SIP line, Dual SIP servers
CDR
DDNS
SIP
TR069
Backup
Security
One‐button SIP Door Phone
- HD Voice
- Door Access: DTMF tones
- Ideal for business, institutional and residential applications
- Open remotely if there is an electronic door lock
- One SIP line, Dual SIP servers
- Door Phone features
- Two‐way audio stream
High Stability and Reliability
- SIP v1 (RFC2543), v2 (RFC3261)
- SIP over TLS, SRTP
- TCP/IPv4/UDP
- HTTP/HTTPS/FTP/TFTP
- ARP/RARP/ICMP/NTP
- DNS SRV/ A Query/NATPR Query
- STUN, Session timer
- DHCP/Static/PPPoE
- DTMF Mode: In‐Band, RFC2833 and SIP INFO