Some of DVM features:
 
• Easy management through WEB supports Persian and English languages
• Ability to add ports FXO and FXS or E1 combined into arbitrary number
• Persian instruction with Multimedia
• Ability to write files to the Email message receiving voice calls (Voice Mail)
• Defining Virtual Fax, Fax to Email allows you to send the user
• Ability to create unlimited audio conferencing with conference management capability
• The possibility of creating an infinite number of possible call queues and queue management with the user's position in the queue
• Defining the answering machine with a variety of IVR capabilities Persian
• Ability to record conversations
• Ability to view the caller's number and name
• Ability to set a code for a number (Speed ​​Dial)
• Ability to store and retrieve contact information (Database Store / Retrieve of data)
• Ability to establish a conference unlimited calls to the number (N Way Calling)
• Ability to record and report the contact details (CDR)
• The possibility of making video calls if you use a Video Phone
• Defining access levels for different purposes at different times
• Ability to communicate with different data centers
• Defining PIN to access different purposes
• Defining Call Back to reduce costs
• Ability to communicate with international lines through IP
• Take advantage of hold music, adjustable by the user or system administrator
• Ability to integrate with PBX systems.
• Use the minimum bandwidth
• Full support for TLS and SRTP security protocols
• Support of all available IP Phone
• Full support for all existing Codec
• Supports communication protocols SIP, IAX2 and H323
• Has features: Call Waiting, Call Forward, Call Transfer, Call Parking, Call Pickup, Ring Group, Follow M