WellSIP 6500 - Enterprise



The Welltech Telephony SIP Proxy WellSIP 6500 provides a comprehensive, 
powerful platform for delivering IP telephony applications based on the Session 
Initiation Protocol (SIP). It offers call-control features to enable service providers 
to quickly and reliably deploy next generation packet-voice networks.


Multiple Advantages

  • Real-Time Call Routing Capabilities
    Call Routing is central to the WellSIP 6500’s role in a SIP network. The 
    WellSIP 6500, in combination with Welltech Total SIP solution, enables the 
    deployment of SIP networks.

  • Improves Operations
    Based on customer-oriented design, the WellSIP 6500 is easy to installation 
    and management for customer. The WellSIP 6500 also allows multiple 
    Welltech Telephony Proxy servers to work together and share information.

  • Auto NAT Traversal
    Due to the lack of IPV4 address, a lot of customer is using NAT for their 
    network. WellSIP 6500 provides a feature to automatically traverse NAT 
    user’s signaling and voice. The customer has no impact no matter they 
    sitting on a public or private network.

  • Enables Enhanced Service
    The WellSIP 6500 provides build-in rich set of enhanced services, such as 
    call forward, transfer, screening …etc. It enables the service provider quick 
    time to market to delivery their service to their customers. Also the new 
    enhanced service can be easily deployed based the SIP protocol.

  • Provides VoIP Total SIP Solution to Customer
    Welltech provides total SIP solution to our customers. From small voice 
    gateway with FXS and FXO interface, IP phone to E1/T1 Trunk Gateway and 
    SIP Proxy server, are popular in the market now. This fact ensures for 
    interoperability of all SIP devices in customer’s network. And we also 
    provide H.323 to SIP signal conversion to help customer easy to migration 
    from H.323 network.


  • 483mm(W) x 450mm(D) x 44mm(H)
  • Weight: 6.92Kg
  • Industrial rack mounted
  • Color: black
  • CE
  • FCC
  • Power 90~240V auto switch
  • Operating temperature 0~60°C
  • Relative humidity 5%~95%
Processors &
  • Intel Pentium 4
  • Windows XP Embedded
  • 1024 MB RAM
  • 512 MB DOM
  • Upgradeable OS
  • Upgradeable AP Image
Front Panel Display
  • Power LED
  • Dom Access LED
  • System Ready LED
  • LCD Status
LAN Interface
  • 10/100/1000 Base Ethernet x 2
  • SIP service & management IP address
Standard Protocol
  • RFC 3261
  • RFC 2976
  • RFC 3262
  • RFC 2327
  • RFC 2833
  • RFC 3581
  • RFC 3264
  • RFC 3265
  • draft-ietf-sip-cc-transfer-05
  • Support SIP UDP
  • Support SIP URI
  • Programmable SIP Service Port
SIP Registrar
  • Dynamic Register
  • Predefine User (up to 2 URI)
  • Predefine NAT User
  • MD5 Registrar Authentication 
  • Register Type Selection
  • Register to External Softswitch or Proxy (multiple)
  • Effective / Expired Date
  • Global or Subscriber based Register TTL
  • Programmable Nonce Live Time
  • Programmable Authentication Check Period
  • Programmable General Max Register Time
  • Programmable Max NAT Register Time
SIP Outbound
Proxy Server
  • Stateful Proxy Server
  • Support Call-based Authentication MD5/Radius
  • Sequential Call Forking
  • Parallel Call Forking (Programmable ring or answer)
  • Proxy Peering Support
  • Hierarchical Proxy Support
  • Subscriber / System based Response Timer (no 
    answer, first response)
  • Auto NAT User Detect
Telephony Features
  • Call Transfer, Call Waiting, Call Hold
  • Unconditional, No Answer, Busy and Unavailable Call 
  • Calling Number Screening (Allowance List, Black List)
  • Outgoing Number Screening (Allowance Prefix, Black 
  • Call Hunting Group with Round Robin, Priority and 
    Max Idle Time method
  • Call Hunting Group with Dedicated Length
  • Ring All with First Ring Back Group Hunting
  • Ring All with First Answer Group Hunting
  • Flexible Digit Manipulation for ANI and DNIS
  • User Group Digit Manipulation
  • Caller ID Privacy
  • Emergency Call
  • Call Pickup
  • Find Me
  • Short Code
  • Do Not Distrub
  • Coloring Ring Back Tone Service*
  • Announcement Service*
  • VMS*
  • Miss Call Notify by Email
  • Subscriber Access Control
  • Separate Web Password
  • User Group
  • Subscriber logon
  • Disallow NAT register
NAT Traversal
  • NAT Traversal Support for Outbound and Inbound
  • Automatically NAT detection and RTP Proxy
  • External RTP Proxy Resource Support**
  • Preferred NAT Resource Server**
  • Support enhanced NAT Partition
  • Intelligent RTP Proxy Resource Management
  • Flat CDR File in Local Storage
  • RADIUS Billing Message Support
  • Support Redundant RADIUS Server
  • Radius Authorization Message for Prepaid Service
  • Call Disconnect for Prepaid User
  • Web/RS232/Console Port/Telnet Interface
  • Programmable Real Time Log (Module / Level)
  • System Event Log
  • HTTP / HTTPS Support
  • Password Security
  • FTP server
  • System event notify by email / syslog
  • User Account Manager
  • NTP time synchronization (SNTP V4)
  • Front LCD Panel for System Status and Management
  • Time Zone Support
  • Auto Daylight Saving
  • Customizable Time Zone
  • Secured provisional Interface
Network Management
  • DHCP
  • Fixed IP
  • DNS, Dynamic DNS
  • Ping
  • SNMP V2 MIB I & II
  • SNMP get command, set command
  • SNMP Trap Support 
System Capacity
(Standard version)
  • Max Subscribers Support: 500
  • Max Concurrent Call: 100
  • Max Concurrent RTP Support for NAT user: 100
System Capacity
(Mini version)
  • Max Subscribers Support: 200
  • Max Concurrent Call: 50
  • Max Concurrent RTP Support for NAT user: 50
User Manual
  • English User Guide

* need external application server
** contact welltech for availability 


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