The phone system moved to the cloud. The job got bigger.
Enterprise voice is no longer a PBX and a rack of trunks. It is cloud calling, mobiles that behave like desk extensions, business messaging, compliance recording and analytics on every call, running across platforms and networks that somebody else operates.
For most organisations the question is no longer whether to move off on-premises telephony but how far the move goes. Calling now lives inside collaboration platforms and cloud phone services, connected to the public network through operators rather than through equipment the business runs itself. The session border controller has not vanished, but it has stopped being the centre of the conversation.
That shift widened what voice covers. The mobile in your pocket is part of the phone system. Text messages are a customer channel with rules attached. Regulated calls have to be captured, kept and increasingly analysed wherever they happen. And the network itself is under pressure from spoofed numbers and AI-generated voices.
Then and now
If your picture of Voice is a few years old, this is what moved.
| It used to mean | It now means | |
|---|---|---|
| The phone system | A PBX on site with an SBC at the edge | Cloud calling inside Teams, Zoom, Webex or a dedicated cloud phone service |
| Connectivity | ISDN and SIP trunks you managed yourself | Operator-managed cloud connectivity, with UK analogue and ISDN lines closing in January 2027 |
| Mobiles | A separate contract and a separate number | Fixed-mobile convergence: one business identity across desk, app and native dialler |
| Messages | Somebody else's problem | SMS, RCS and OTT messaging as business channels, with sender rules and consent |
| Recording | A box that kept calls in case of a dispute | Compliance capture across fixed, mobile and collaboration calls, searched and analysed |
| Analytics | Call logs and a monthly bill | Transcription, topics, sentiment and compliance monitoring on every conversation |
The landscape
How calling reaches the public network now: operator-connected cloud services, direct routing where it still makes sense, and calling plans bought from the platform itself. The architecture decision has moved from which box to which operator, which country and which mix.
Making the mobile network part of the business phone system, so a call to a desk number rings the native dialler, mobile calls appear in the same records, and a leaver's number stays with the business.
Text has become part of voice's remit: two-way SMS from a business number, RCS with branding and buttons, and OTT channels such as WhatsApp sitting alongside calls in the same workflow.
Capturing, retaining and retrieving regulated conversations across every channel people actually use, mobiles and collaboration apps included. In financial services that means evidential standards, not a recording button.
Turning recorded and live calls into something searchable and measurable: transcription, topic and sentiment detection, and compliance monitoring across every call rather than a sample.
Proving a call is who it says it is. Ofcom has tightened the rules on spoofed caller IDs, operators block suspect calls, and businesses need their own numbers trusted when they ring customers.
Keeping calls working when the platform, the network or the building does not, and making sure an emergency call from a hybrid worker reaches the right place with the right location.
The UK's analogue and ISDN network closes in January 2027. The phones are the easy part. Lifts, alarms, door entry and payment terminals on old lines are where projects stall.
What is emerging
The developments the Voice programme is built around, and the ones every exhibitor will be asked about.
Transcription, summaries and translation moving from add-ons into the calling platform itself, so every call can produce notes, actions and a searchable record.
AI agents answering calls that used to reach an IVR menu, with voice teams owning the plumbing that connects them to the phone network.
Caller ID authentication, branded caller display and stricter blocking of spoofed numbers, as regulators and operators move against scam calls.
AI-generated voices making phone fraud easier, and voice biometrics and liveness checks becoming part of call security.
For many workers the mobile is now the primary business phone, and recording, analytics and compliance have to follow the call onto it.
Operators exposing checks such as number verification and SIM swap through standard APIs, so fraud checks can happen in the background of a call.
Voice sessions
Every PACKETLOSS session is Level 200 to 400. These show the depth, not the final programme, which members help shape.
Who should come
For the people who keep an organisation's calls working, compliant and trusted.
For exhibitors
Visitors to the Voice zone are technical buyers and the people who will run what they buy. They come to compare connectivity, mobile, recording and analytics options side by side, and they want to see it working on a real call rather than on a slide.
What works: live demonstrations, technical people on the stand, and a straight answer about which platforms you work with. Nothing at PACKETLOSS is Level 100, and that includes the stands.
The other disciplines
From answering contacts to resolving customers.
Explore →Software that listens, speaks, sees and understands.
Explore →Where work happens, and increasingly where AI does too.
Explore →Communications as building blocks.
Explore →PACKETLOSS 2028 · Voice
Two days. Every platform. No beginner content.
Register your interest, put a session forward for the Voice programme, or ask about exhibiting.
The next PACKETLOSS is in 2028. The date, venue and exhibitor packages are announced once confirmed.