• V20: 3CX Re-engineered. Get V20 for increased security, better call management, a new admin console and Windows softphone. Learn More.

Search results

  1. New SIP firmware for old Nortel/Avaya 11xxE/12xxE phones is available

    Avaya/Nortel 11xxE/12xxE flashing SIP firmware Example made with an 1140e with firmware non-SIP firmware 0625C8A 1. You need a TFTP server. TFTPD32 for Windows works fine 2. Edit your DHCP server to provide option 66 to let he phone know the address to the TFTP server. 3. Download latest...
  2. New SIP firmware for old Nortel/Avaya 11xxE/12xxE phones is available

    I notice Avaya is still updating SIP firmwares for their old 11xx/12xx phones in a hidden ftp folder at ftp://ftp.avaya.com/incoming/Up1cku9/tsoweb/11001200/ Latest version is from January 2018 with version 04.04.31.00. I have read in this forum that no one managed to get them to work 100%...
  3. 3CX App on iPhone

    Where are your phones related to the PBX? Same sub-net/LAN then this is strange behaviour. If you have a firewall/NAT between the phone and the PBX then you need to use a SBC to use 2 phones behind the same firewall/NAT More about the SBC here...
Get 3CX - Absolutely Free!

Link up your team and customers Phone System Live Chat Video Conferencing

Hosted or Self-managed. Up to 10 users free forever. No credit card. Try risk free.

3CX
A 3CX Account with that email already exists. You will be redirected to the Customer Portal to sign in or reset your password if you've forgotten it.