Logo
Submit a request
Sign in
  1. I.T Communications - Help Centre
  2. Useful Information

Useful Information

Interop Information

  • Can i call international numbers
  • Can i call UK premium rate numbers
  • Can I call the new non-emergency numbers 101 and 111?
  • Firewall Rules to Allow for I.T Communications VoIP Accounts

Soft-Switch Hosted PBX

  • Yealink BLF Key Setup Guide
  • How to do Phone Provisioning

3CX Phone System

  • Upgrading 3CX to V16 – Please Read
  • Setup SIP Trunk on 3CX Phone System
  • Can incoming calls be diverted if we have a power cut.
  • How to make a Ring Group signal extensions that are already busy with another call
  • Patton Smartnode Not playing busy promt on outbound busy calls (ISDN)
  • How to Setup Draytek Router with 3CX Setup
See all 8 articles
I.T Communications - Help Centre