
To better serve our growing user base in the United Kingdom and surrounding regions, SIP Caller has deployed a new server in London. This addition enhances call quality and reduces latency, especially for users in the UK, but also for many customers across Northern and Western Europe.
Until now, our European users connected primarily through our infrastructure in Italy. With the London server now operational, customers closer to the UK can benefit from faster call setup times, lower round-trip delays, and improved audio performance.
To take advantage of this new server, users will need to adjust the configuration of their phone system in the SIP Caller management console. A new “Europe - United Kingdom (London)” region is now available and can be selected when configuring the PBX connection for your campaigns.
This upgrade is part of our continued commitment to providing a fast, reliable, and scalable dialing experience, whether you're running power or predictive dialer campaigns.
As always, our support team is available to help with any configuration changes or questions.

Black lists and contact lists can now be fully managed through the SIP Caller REST API. You can create, edit, and delete lists, and add or remove their numbers and variable values, directly from your own systems. A new endpoint also loads every number from a contact list into a campaign with a single request. Keep opt-outs in sync with your CRM, refresh contact lists on a schedule, and provision new accounts end-to-end without a single manual step in the console.

This release brings three meaningful improvements to SIP Caller. The list of campaigns in the Dashboard, Campaigns menu, and Reports menu now shows a detailed status icon explaining exactly why an active campaign isn't making calls. Campaigns can now also be assigned a Priority (High, Normal, or Low), so your most important campaigns get access to calling capacity first. And thanks to internal architectural improvements, campaigns now start making calls within 5 seconds of activation, down from up to 30 seconds previously.

OpenAI and Grok are now available as AI Providers in SIP Caller, joining our existing support for Microsoft Azure AI and Google Gemini AI. Both new providers can power AI Conversational Agents and AI-Based Voicemail Detection across your outbound campaigns. With four AI providers to choose from, you can align SIP Caller with the AI provider agreements your company already relies on elsewhere, or simply pick the best option available on the market for your use case.