Chapter 3
Voice is the original enterprise communication channel. Despite a decade of predicting digital alternatives might replace it, that hasn't happened. What has changed is the context: Who's calling, when, and why?
The data on customer preferences is more nuanced than the headlines suggest.
Voice holds firm where other channels fall short: escalations, urgent issues, and any moment where a customer needs more attention, expertise, and understanding.
Still prefer the phone for customer service
Despite the rise of chat, email, and messaging, phone calls remain the top channel for customer service interactions, preferred by 61% of Baby Boomers and still used by roughly two in five Gen Z consumers as highlighted in a May 2025 Forrester Consumer Pulse Survey.
Gartner research confirms this: the phone remains the most popular customer service channel overall and is consistently the preferred route for escalation and complex issues. Look at what consumers rate as their most important messages, 74% rank fraud alerts at the top, followed by healthcare test results at 59%, and appointment confirmations at 57%.
Most contact centers record calls. Few mine the data inside them.
Most contact centers record the majority of their calls. Far fewer do anything useful with the data inside them. The speech analytics market tells that story clearly, it’s projected to grow from $2.82 billion to $11.9 billion by 2032, driven largely by enterprises finally mining a backlog of voice data they’ve been sitting on for years.
These tools apply AI and machine learning to pull structure out of unstructured voice data, surfacing patterns in emotion, intent, and compliance that would otherwise stay buried in call recordings. Every recorded call now has the potential to surface a business insight.
For call centers, these insights can directly improve performance. Speech analytics identifies common customer issues, reduces average handle time, detects compliance risks, and coaches agents to be more effective. Instead of manually reviewing calls, organizations can evaluate thousands of interactions automatically and continuously improve service quality.
The organizations that have already built modern, cloud-native voice infrastructure will capture this value first. Those running legacy systems won’t.
The roadmap for voice technology is already visible. Expect continued development in:
The businesses that benefit will be the ones whose infrastructure can integrate without friction. Rigid, legacy systems will be left on the outside.
Sinch’s programmable voice platform turns your call data into structured insight, with the integrations to act on it.
