Cost Saving and Investment Protection
The DVG-2004S provides businesses with an easy and inexpensive upgrade to Internet telephony while allowing them to retain their existing telephone and fax equipment. It allows users to protect and extend their past investments in telephones, conference speakers phones and fax machines, as well as to control their migration to IP with a very affordable and incremental investment.

4 Internet Telephone Connections
The DVG-2004S provides 4 FXS ports for 4 simultaneous Internet phone connections. Plug in regular phone sets to these ports, and they instantly become Internet telephones. For offices with frequent needs for long-distance and international phone calls, this device provides great cost saving and convenience, allowing users to connect any phones or fax machines to it to make calls or send out faxes on the Internet. Each of the 4 service lines from the DVG-2004S can be independently configured through software controlled by the Service Providers or the end users.

Convenient Call Features
This DVG-2004S supports many useful functions, allowing the service providers to offer these functions to their subscribers. Provided that the telephone sets at the end-users side support these functions, callers can take advantage of these convenient features. The DVG-2004S call function support includes attended call transfer, call forward (busy, no answer, unconditional), call hold and retrieve, call waiting,
caller ID display, anonymous call blocking and 3-way conference. Numerous ring tones are also supported, allowing users to personalize ring tones for easy recognition of incoming calls.

Guaranteed Voice Quality
The DVG-2004S delivers clear sounds, voice and reliable fax calling through implementation of internationally recognized standards for voice and data networking. It incorporates Quality of Service (QoS) functions to ensure that voice received through the Internet is the same as or even surpasses that received on the ordinary phone.