Showing results for 
Search instead for 
Did you mean: 
Alberto Montilla
Cisco Employee
Cisco Employee


Tested by: Steve Bieniek, VoIP Unlimited

UC320W FW release: 2.1.0(22)

  • Provider: Generic SIP Provider
  • Description: VoIP Unlimited
  • Proxy:
  • Registration: Checked (Client-server SIP trunk, registration required)
  • Outbound Proxy:
  • Call Capacity: 12
  • Prefix # w/"+44" : Uncheck (uses UK national numbering plan)
  • Company Name: <Your company name> (this will appear as the Display Name field on SIP messaging)
  • Account ID:  <Account Phone number as provided by the ITSP>
  • SIP domain name:
  • Authentication ID: <Same as Account ID>
  • Password: <As provided by the ITSP>
  • SRV Recorded Lookup: Checked
  • SRV Auto Prefix: Checked
  • NAT Mapping: Checked
  • Send NAT Keepalive: Checked

         Systemwide parameters

  • Codec: G711a
  • Outbound FAX:  T.38
  • NAT STUN Server: (Supports also static IP address mapping if using static public IP)

Known Issues:

Community Member


Some additional supporting notes from our side:

* The UC320 can process a maximum of 12 external calls whereas VoIP Unlimited provides "Unlimited" channels for a flat fee of £10.99 plus vat per month

* G711u and G729 codecs are also supported


Steve Bieniek

Tel: 01202 612000

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: