
CPaaS: A Business Leader’s Guide
Learn how communications platform as a service (CPaaS) helps you build flexible and efficient communications workflows

Learn how communications platform as a service (CPaaS) helps you build flexible and efficient communications workflows

Nowadays, one of the useful tools of text message marketing is short codes. Businesses switch from long to short codes to make phone numbers more memorable and reliably distribute a higher volume of SMS messages.

Voximplant has a dedicated A2P (Application to Person) SMS API for high-volume messaging needs.

With SMS gateways, it’s possible to send bulk SMS messages without a mobile phone. In this article, we explain how SMS gateways work.

RCS, which stands for Rich Communications Services, is a next-gen SMS protocol. RCS aims to improve the functionality of default SMS messaging experience.

Voximplant now includes a native Deepgram module that connects any Voximplant call to Deepgram’s Voice Agent API for real-time, speech‑to‑speech conversations. You can stream audio from phone numbers, SIP trunks, WhatsApp, or WebRTC into Deepgram’s unified agent environment—combining STT, LLM reasoning, and TTS—and play responses via Voximplant’s serverless runtime with minimal latency.

Connect any Voximplant call to ElevenLabs Conversational AI agents

The new integration enables instant connection of any Voximplant call to an Ultravox agent, delivering seamless voice-to-voice conversations.

OpenAI has recently announced GA version of their Realtime API that Voximplant now fully supports

Voximplant has new realtime speech generation for voice AI from Inworld, our latest Voice AI text-to-speech (TTS) partner. Together, we combine state-of-the-art TTS with carrier-grade connectivity so you can build voice agents that sound like your brand, not a generic robot.

Voximplant now includes a native Cartesia module for streaming, low-latency text-to-speech (TTS). You can use a single VoxEngine API to synthesize speech in real time, connect it to any call (PSTN, SIP, WebRTC, WhatsApp) and control playback from a Large Language Model (LLM) or other source, all inside VoxEngine.

Voximplant now includes a native Grok module that connects any Voximplant call to xAI’s Grok Voice Agent API for real-time, speech-to-speech conversations. With a single VoxEngine scenario, you can interact via audio with Grok over phone numbers, SIP trunks and infrastructure, WhatsApp Business, or WebRTC into Grok — all without building custom media gateways or WebSocket streaming infrastructure.

Today Ultravox announced they are directly integrating Voximplant into their platform to provide SIP capabilities. The integration builds on Voximplant’s deep telephony and Voice AI tooling