Description

Overview

The DP91-S is a single-button SIP voice intercom terminal equipped with an advanced audio system featuring echo cancellation. Designed for use alongside indoor intercoms, it enables users to communicate with the callee at any time.

The DP91-S offers a one-touch emergency calling function, allowing users to contact the management system during emergency situations. Built with an aluminum alloy housing, it is waterproof and vandal-resistant, supporting wall-mounted installation. The terminal connects easily to the Internet and IoT business control systems, supports multiple interface linkages and remote control functions, and provides secure, reliable, and efficient communication. It is ideal for industrial applications, building management, banks, schools, tourist attractions, transportation stations, and technology parks as part of intelligent access control and intercom security systems.

Specifications

Audio Features

• HD voice
• Two-way audio stream
• Wideband codec: G.722
• Narrowband codec:
  • PCMA
  • PCMU
  • G.729
  • G.723_53
  • G.723_63
  • G.726_32
• Echo cancellation with G.168
• Voice activity detection (VAD)
• Comfort noise generator (CNG)
• Built-in microphone and speaker
• Acoustic echo cancellation audio output

Access Control

• Two SIP lines, Two SIP servers
• Door Unlock Method: DTMF tones
• Door Phone Features:
  • Full-duplex communication
  • Default auto answer
  • Action URL / Active URI remote control
  • Speed dial

Environments

• Working Temperature: -35~65 ℃
• Storage Temperature: -40~70 ℃
• Relative Humidity: 10%~90%

Protocols & Network

• SIP v1 (RFC2543), SIP v2 (RFC3261)
• SIP over TLS, SRTP
• ONVIF
• TCP/IPv4/UDP
• RTP/RTCP, RFC2198, RFC1889
• HTTP/HTTPS/FTP/TFTP
• ARP/RARP/ICMP/NTP
• DNS SRV/A Query/NATPR Query
• Primary/Secondary DNS
• STUN, Session Timer
• 802.1p/q, DSCP, 802.1x
• DHCP/Static IP/PPPoE
• DTMF Mode:
  • In-Band, RFC2833 and SIP INFO

Physical Specifications

• 1 call button (DP91-S)
• Aluminum surface, metal bottom shell
• Power Supply: DC 12V/1A or IEEE 802.3af PoE
• Power Requirements: IEEE 802.3af PoE Class 3
• 1 × RJ45 10/100M Ethernet port
• Installation: Wall-mounted
• Device Dimensions (L × W × H): 88 × 120 × 35 mm
• Package Dimensions (L × W × H): 170 × 112 × 54 mm
• Outer Box Dimensions (L × W × H): 565 × 360 × 255 mm

Administration Features

• Auto Provisioning:
  • FTP/TFTP/HTTP/HTTPS/PnP
• HTTP/HTTPS Web Management
• Configuration keypad-based management
• SNMP/TR069
• NTP/Daylight Saving Time
• Firmware Upgrade via Web
• Syslog
• Configuration backup/restore

Physical Interfaces

• 1 port 10M/100M RJ45 Ethernet with PoE
• 1 relay output
• 1 sensor short circuit input
• 1 exit button input
• 1 port 8Ω speaker
• 1 microphone input
• 1 RS232 port
• 1 DSS key port

Highlights

• HD Audio
• Broadcast support
• Self-diagnosis
• Auto Provisioning
• Wall-mounted design
• One-touch emergency calling
• IP54 waterproof protection
• IK09 vandal-resistant protection
• Door unlock via DTMF