VOCAL includes all the standard features expected of an ATA, plus innovative premium features demanded by your customers. With the patent-pending VOCAL VoATA control software, an end user can manage up to four VoIP service providers with a single ATA. User access may be automatic on a per-number basis, or can be as simple as using a standard long distance prefix such as “1010825…”. Contact us to discuss your application design requirements.

Phone User Services
Place/Cancel Outgoing Calls
Answer Incoming Calls
Full Duplex Audio
Flexible Dial Plan Support
Fax Tone Detection (Pass Through)
ITU T.38 Fax Support
PSTN Line Support (Dial and Backup)
PSTN Emergency 911/999
Call-in Profiles
IPBX (Internet Private Branch  Exchange)
IHT (Internet Home  Termination)
SIHT (Simple  Internet Home  Termination)
SIOT (Small  Internet Office  Termination)
Voice Features
Voice Activity  Detection (VAD)
Silence  Suppression (DTX)
Comfort Noise  Generation (CNG)
Packet Loss  Concealment (PLC)
Dynamic Jitter  Buffer (Adaptive)
Audio Codec  Preferences
Dynamic Payload  Negotiation
Codec Name  Assignment
Adjustable Audio  Frames per Packet
CLASS Features
Call Waiting Enable/Disable
Caller ID Display  Enable/Disable
Call Waiting Caller ID  Enable/Disable
Blocked Call List for a  Specified Number
Distinctive Ring for a  Specified  Number
Block/Unblock Caller ID
Block/Unblock Caller ID for  One Call
Accept Priority Call of a  Specified Number
Busy Number Redial
Call Return (Call the Last  Caller)
Deactivate/Activate Call Waiting for Current Call
Call Forwarding

  • Forward Priority Call of a Specified Number
  • Forward on Busy
  • Forward on No Answer
  • Forward all Calls
Speed Dial (8 + 20 Numbers)
Block Anonymous Calls
Do Not Disturb
Call Transfer
3-way Conference Calling  with  Local Mixing
Call Hold
Call Waiting/Flash
Flash Hook Timer
Delay Disconnect
Hot Line and Warm Line Calling
Call Blocking with Toll  Restriction
Caller ID Generation (Name & Number) – Bellcore, DTMF,  ETSI
Call Waiting Caller ID with  Name/Number
Distinctive Ringing
Distinctive Call Waiting
MWI – Message Waiting Indicator Tone and Visual
Polarity Control
Call Progress Tones
Programmable Tone  Generation Patterns
Four Tones, Four  On/Off Time Pairs

  • Initial Dial Tone
  • Secondary Dial Tone
  • Stuttered Dial Tone
  • Message Wait Dial Tone
  • Call Forward Dial Tone
  • Pre-Ringback Dial Tone
  • Ring Back Tone
  • Call Waiting Tone
  • Call Holding Tone
  • Call Disconnect Tone
  • Call Conference Tone
  • Busy Tone
  • Reorder Tone (Network/Fast Busy)
  • Off Hook Warning Tone (Howler Tone)
  • SIT Tones 1 to 4
  • Prompt Tone
  • Confirm Tone
  • Input Error Tone
  • Number Error Tone
Ringing Patterns
Programmable Ring  Patterns
Four On/Off Time Pairs

  • Default Ring
  • Hold Rering
  • Call Back Ring
  • Call Back Ring Splash
  • Call Forward Ring Splash
  • Message Waiting Ring Splash
  • 8 Distinctive Ring Patterns
Distinctive Call Waiting
Programmable Tone  Generation
Four Tones, Four  On/Off Time Pairs
8 Distinctive Call  Waiting Patterns
LED Display Patterns
Tri-Color LEDs (Red, Orange, Green)
Programmable LED Patterns
Four On/Off Time Pairs
Configurable Display Priority

  • Use and Waiting
  • Ringing or Waiting
  • PSTN in Use
  • Use and Hold
  • Line in Use
  • Call Holding
  • Do Not Disturb
  • Call Forward
  • Message Waiting
Voice-over-IP (VoIP) Protocols
Power-on Auto Registration
Re-registration with SIP Proxy Server
SIP over UDP
SIP Authentication (HHP Digest with MD5)
Quality of Service
Port Priority for VoIP Packets from  Application
High and Low Priority Transmit Queues for  Interface
NAT/Firewall Support
Built-in Router
Automated NAT Traversal Without Manual  Manipulation of Firewall/NAT
NAT Traversal for Private Networks with  STUN
NAT Firewall
Gateway and DMZ Port Forwarding
LAN Pass Through
Point-to-Point Protocol over Ethernet (PPPoE)
Password Protected Web based  Administration
RC4 Encryption for TFTP Configuration  Profiles
Authentication (DIGEST using MD5)
Remote Configuration/Maintenance
Web Configuration via Built-in Web Server
Configuration Update via TFTP or HTTP
Firmware Upgrade via TFTP or HTTP
SYSLOG Update/Upgrade Processing  Notifications
Administration Guide
Installation Guide
Configuration Guide