- Create the desired extension in 3CX.
- Under Phone provisioning, add the MAC of the SPA112 and choose Cisco SPA-302 for the model.
- Turn off voicemail.
- Set up an Inbound Rule for the DID if desired.
- Plug into a port on desired VLAN
- Navigate to its web interface and login.
- For Line 1:
Proxy: <YOUR 3CX SERVER IP HERE>
Display Name: Ext#
User ID: Ext#
Password: 3CX auth password
- Submit
- Once rebooted and logged in, Click Administration > Firmware Upgrade
- Choose File: Payton_1.4.1_002_102615_1042_pfmwr.bin
- Upgrade
- Once rebooted and logged in, Click Network Setup > Basic Setup > Time Settings
- Time Zone: GMT-05:00 Eastern Time
- Time Server: Auto
- Submit
- Voice > Line 1 > Supplementary Service Subscription
- Call Waiting Serv: No
- Three Way Call Serv: No
- Administration > Management > Bonjour
- Set to Disabled
- Submit
- Administration > Management > User List
- Admin > Edit
- Set new password
- Cisco > Edit
- Set new password
- Click network setup > Advanced Settings > VLAN
- Enable VLAN (if you need to)
- VLAN ID: ####
- Submit