Product and Solutions


OM4 is an all-in-one IP-PBX for small office, featuring built-in analog phone interfaces, CO line interfaces, SIP trunks and SIP client support. With features such as click-to-call, auto-attendant, on a fly recording, mobile extension, and call back, it greatly improves the communication with customers.

  • Telephon system for small enterprises with distributions, such as chain-stores and etc.
  • Intellectual home telephone system of home
  • Call center
  • Telephone system for virtual offices
  • Automated attendant
  • Interactive voice response (IVR)
  • Working hour and non-working hour service
  • Changing automated attendant profile on a fly
  • Queuing
  • Operator group (Up to 5 operators)
  • Operator console
Incoming Call
  • Direct inward dialing (DID)
  • Direct dialing in (DDI)
  • Calling line identification (CLI) distribution
  • Call block
  • Ring tone pattern selection
  • Call waiting
Group Receiving
  • Extension group
  • Group call distribution
  • Group ringing
Extension Receiving
  • Call forking (Ring simultaneously another pre-selected terminal)
  • Call forwarding (FWD)
  • Do not disturb (DND)
  • Ring pattern selection
  • Color ring back tone
Call Pickup
  • Directed pickup
  • Group pickup
  • Pickup operator's call only
Making Call
  • Intercom call
  • Account code entry
  • Outgoing line preference
  • Trunk group
  • Speed dialing
  • Hot line (Immediate, delay)
  • Caller ID block
  • Emergency call
Outside Access
  • Direct inward system access (DISA)
  • Call back
  • Remote extension setting on phone
Call Restriction
  • Toll restriction/Call barring
  • Budget management
  • Extension lock
  • Verified code entry
  • Automatic route selection
Call Transfer
  • Blind call transfer
  • Consultation call transfer
  • Call transfer to CO line
Call Hold
  • Call hold
  • Call park
  • Music on hold
  • 3-Way Calling
Caller ID
  • Caller ID
  • Incoming call log
Message Notification
  • Voicemail message waiting (FSK, polarity reversal)
  • Extension recording
  • On the fly recording
Audible Tone
  • Dial Tone
  • Confirmation tone
  • Stutter dial tone
CO line (FXO)
  • Polarity inverse detection
  • Caller ID detection
  • Busy tone detection
  • DTMF outpulsing delay
  • Volume control
Subscriber Line (FXS)
  • Polarity inverse generation
  • Caller ID generation (FSK, DTMF)
  • Ring cadence setting
  • Ring frequency setting
  • Volume control
SIP Trunk
  • Registration per line
  • Registration per system
Tie Trunk Service
  • Direct internal dialing
  • Call forwarding
  • Call transfer
  • Outbound trunk sharing
Other SIP Connection
  • Peer-to-peer SIP communication
SIP Extension Outgoing
  • Incoming
  • HOLD
  • Transfer
  • Busy line field (BLF)
PC Assistant Click-to-call
  • Contact list
  • Presence
  • Short message
  • Retrieving voice mail and recording file
  • Call log
  • DHCP
  • PPPoE
  • NAT traversal
  • IP address filtering for security
Media Stream Processing
  • Codecs: G.711, G.729A, T.38
  • Echo cancellation
  • Jitter buffer automatic adjustment
  • Busy tone detection
Non-telephone Terminal
  • Fax transmit and receive (T.30 and T.38)
  • POS transmit
  • PBX connectivity (Analog trunk and analog extension)
System Management
  • Web management interface (Local and remote access)
  • Firmware upgrade
  • Log management
  • Configuration import and export
  • System status monitoring and statistics
ModelLocal ExtensionCO LinesSIP ExtensionsSIP Trunks

Click link to download PDF file

  1. User Manual