Small changes to a calling app can make a noticeable difference to a busy reception or sales team. Signing in, choosing the number used for a callback and transferring a caller are tasks people repeat throughout the day.<\/p>\n
3CX announced the production release of Windows Softphone V5.8 on 6 October 2026. It introduces Google and Microsoft 365 sign-in, outbound-number selection and a configurable default for BLF transfers. The new features described in the announcement require the phone system to run V20 Update 10.<\/p>\n
After entering the 3CX server address, users can choose Google, Microsoft 365 or email sign-in. Google and Microsoft 365 authentication takes place through the browser before provisioning information returns to the app.<\/p>\n
For a company using a central identity platform, this is a reason to review how staff join and access the phone system. Confirm the intended account works on a pilot device before preparing instructions for the wider team. Keep the instructions specific to your environment so users know which server address and account to use.<\/p>\n
When an administrator enables the feature, users with multiple assigned numbers can choose a number through the \u201cCall using\u201d selector. The default route still follows the configured outbound rules. The permission is disabled by default.<\/p>\n
This can be useful for someone working across departments, where returning a call using the appropriate business number helps the recipient recognise it. It is worth agreeing the intended use with team managers before enabling the option.<\/p>\n
As a deployment check, call a controlled external test destination and confirm what number it receives. Do not assume that selecting a number in an app proves how it will appear through your particular SIP service. Also test what happens when that number is called back: the return journey should reach the intended team.<\/p>\n
V5.8 allows a default blind or attended transfer method for BLF keys. A manual transfer choice on the keypad takes priority for that transfer. BLF keys provide shortcuts associated with extensions, making this setting relevant to users who transfer calls frequently.<\/p>\n
An attended transfer lets a colleague speak to the receiving person before completing the handover. A blind transfer sends the call onwards without that preliminary conversation. The best choice depends on the team\u2019s workflow: a reception desk handling sensitive enquiries may want a different habit from a team making routine internal handovers.<\/p>\n
Train users with a short practice call. Ask them to try an available colleague, a busy colleague and an unanswered destination. The purpose is to confirm that both the application behaviour and the wider call flow match expectations.<\/p>\n
The official V5.8 release announcement<\/a> links to the Microsoft Store download and advises removing an installed beta before using the production version. Check the existing app version and the PBX update level before starting.<\/p>\n I.T Communications provides UK 3CX support<\/a> for administration, faults and planned upgrades. We can help assess the existing environment and coordinate app changes with the phone system\u2019s configuration.<\/p>\n\n
Get support for your 3CX apps and platform<\/h2>\n