Dinstar DAG2500-48 48 ports FXS High-density Analog VoIP Gateway

Product Highlights:

• High-density gateway with up to 48 FXS ports in a compact 1U chassis
• Supports IPv4 and IPv6 networking
• Maximum line length up to 5 km
• Supports SNMP and TR-069 for remote management
• Multiple audio codecs supported: G.711A/U, G.723.1, G.729A/B, and iLBC
• Compatible with Asterisk and FreeSWITCH platforms, and interoperable with BroadSoft
• Fully compatible with leading IMS/NGN and SIP-based IP telephony systems

Technical Highlights

Phone Connector:

• DAG2500-48S: 48 FXS, RJ 45 or RJ21, 50 PIN

Call Features:

• Digit mapping support
• IMPU configuration
• Action URL integration
• Voicemail functionality
• Customizable IVR system
• Call waiting feature
• Call hold capability
• Do Not Disturb (DND) mode
• Blind call transfer
• Attended call transfer
• Call forwarding when busy
• Call forwarding on no answer
• Ring group and hotline support
• Three-way conferencing
• Early media and early answer support
• Speed/abbreviated dialing
• Access mode and peer mode operation
• SIP Plug-and-Play (PnP) auto provisioning
• PBX-based IVR support
• Unconditional call forwarding
• SIP registration with multiple servers
• Flexible call routing policies
• Caller and called number manipulation

FXS:

• Connector: RJ45 or RJ21
• Reversed Polarity
• Pulse: 10 and 20 PP
• Max Line Length: 5 km
• Dial Mode: DTMF and Pulse
• Programmable Call Progress Tone
• Caller ID: DTMF/FSK CLI Presentation

VoIP protocol:

• SIP v2.0 support over UDP and TCP, compliant with RFC 3261
• SDP and RTP (RFC 2833) with support for RFC 3262, 3263, 3264, 3265, 3515, 2976, and 3311
• RTP and RTCP compatibility based on RFC 2198 and RFC 1889
• Dual-stack network support for IPv4 and IPv6
• Outbound proxy functionality
• Master and slave server configuration support
• TEL URI support as defined in RFC 2806
• NAT traversal support using RFC 3581 rport
• VLAN tagging and prioritization with IEEE 802.1P and 802.1Q
• Session timer support compliant with RFC 4028
• DNS SRV, A, and NATPR query support
• NAT traversal via STUN with static and dynamic NAT option

Voice & FAX:

• Supports call recording
• T.38 fax with pass-through functionality
• Modem and POS device compatibility
• Silence suppression for efficient bandwidth usage
• Bandwidth optimization
• Comfort Noise Generation (CNG)
• Voice Activity Detection (VAD)
• Packet loss concealment
• Adaptive jitter buffer for smooth voice transmission
• Programmable gain control
• Supports codecs: G.711A/U, G.723.1, G.729A/B, G.726, iLBC, AMR, AMR-GSM
• DTMF support via in-band, RFC2833, or signal modes
• Advanced echo cancellation (G.168) with up to 128 ms delay