VOIP Gateway עם 24 יציאות FXS, יציאת WAN, יציאת LAN

Interfaces
• 24-port FXS c 1 RJ-21 connector
• Port 10/100BASE-TX RJ-45 WAN
• Port 10/100BASE-TX RJ-45 LAN

Main functions
• Transferring a call to a fixed number
• Recall the apparatus employed
• Digit Map (numbering plan)
• Direct call IP-to-IP without SIP Proxy
• Echo cancellation
• Hot Line, Warm Line
• Built-in phone book with the ability to speed dial
• Music on Hold
• MWI (LED voice messages)
• The name of the caller and the call (FSK)
• The main function calls:
  - Blocking of anonymous calls
  - Blocking and filtering of calls
  - Call Forwarding (Always, busy, no answer to the specified number, unconditional, not available)
  - Call history (status calls)
  - Call Hold
  - Caller ID (Support Proxy)
  - Block calls by IP-address of the caller
  - Interception of call
  - Dial the last number dialed
  - Call Forwarding (support Proxy)
  - Talk time
  - Transferring a call to a fixed number (Call park) and the removal of the call off hold (Call Retrieve)
  - Call Waiting
  - Do Not Disturb

Voice Features
• Codecs: G.711 a / u law, G.726, G.729A, G.723.1
• Voice Activity Detection (VAD) for G.711/723/729
• Comfort noise generation (CNG) for G.711/723/729
• Out of band DTMF event
• Gain Control (incoming / outgoing)
• Automatic detection and switching of voice / fax / data (up to 33.6 kbit / s)
• Adjustable jitter-buffer
• Detection and generation DTFM
• Detection and generation of caller ID (Caller ID): BellCore type 1 and 2, ETSI
• Detection of tones / multitona: 300-2 kHz
• T.38 real time FAX/T.30 FAX bypass through G.711
• CPT: Continuous incremental modulation modulation, 16 steps (optional)
• Supports FXS 12/16 kHz (optional)

Management
• Automatic upgrade (software / TR-069 (optional))
• Set up backup / restore
• DHCP / PPPoE / Static / PPtP IP on the WAN port
• DNS and Dynamic DNS
• Software update via web-interface
• Detailed call record (CDR)
• Specification WAN IP and network mask
• Network Time Protocol (NTP) and the time zone setting
• Password security (Web UI)
• SNMP v2
• System status
• Syslog
• DiffServ and TOS
• VLAN Tagging on the WAN port

Security
• MD5 for SIP Authentication
• Secure the admin and user access settings (administrator and user)

A Comprehensive VoIP Solution
It combines the industry’s latest Voice over IP (VoIP) network technology with advanced communication features, and is fully compatible with SIP Internet phone services. High port densities allow it to provide a low cost of ownership, convenience, and great savings for companies needing to place frequent longdistance and international business calls.

Cost Saving and Investment Protection
The DVG-2024S gateway provides businesses with an easy and inexpensive upgrade to Internet telephony while allowing them to retain their existing telephone and fax equipment. These devices allow businesses to protect and extend their past investments in telephones, conference speakers phones and fax machines, as well as to control their migration to VoIP with a very affordable and incremental investment.

24 Internet Telephone Connections
This gateway provides 24 FXS ports for simultaneous Internet phone connections. Plug in regular phone sets to these ports and they instantly become Internet telephones. For businesses with a frequent need for long-distance and international phone calls, the VoIP gateway provides great cost savings and convenience while keeping configuration and maintenance to a minimum.

Guaranteed Voice Quality
The DVG-2024S gateway delivers clear voice and reliable phone/fax communication through implementation of internationally recognized standards for voice and data networking. It incorporates Quality of Service (QoS) functions
to ensure that audio quality received through the Internet is the same as or even surpasses that received on a standard land line.

Convenient Call Features
The DVG-2024S gateway supports extensive call features such as call waiting and call forwarding, allowing service providers to offer these functions to all subscribers with compatible telephones. Configuration of an individual phone connection is easy using the multi-language Interactive Voice Response (IVR) system or the web-based user interface.