VoIP Calls Server on Debian 12 LTS: Proven Telephony on Long-Term Support Foundation

Launch VoIP Calls Server on hardened Debian 12 LTS — engineered for reliability, high availability, and seamless Azure integration.

This virtual machine delivers VoIP Calls Server running on Debian 12 "Bookworm" LTS, a battle-tested Linux distribution with 5-year security support. Preconfigured by Art Group for enterprise telephony, it's optimized for SIP trunks, call centers, and unified communications platforms.

Featuring robust call handling, queue management, voicemail-to-email, and multi-codec support (G.711, G.729, Opus), this LTS platform ensures uninterrupted service with guaranteed security updates through 2028. Ideal for compliance-driven deployments requiring long-term predictability.

Art Group provides telephony-optimized networking, firewall hardening, monitoring integration, and comprehensive deployment guides for production-ready VoIP infrastructure from day one.

Feature	Asterisk on Debian 12 LTS	Asterisk on Debian 11 LTS
LTS Support	5 years security updates (through 2028)	Support ending 2026
Asterisk Modules	Latest chan_pjsip, res_rtp_asterisk, app_confbridge	Older module versions, limited WebRTC
Security	TLS 1.3, SRTP v2, AppArmor profiles, fail2ban	TLS 1.2, basic SRTP, no AppArmor
Codec Support	Opus, G.722, SILK, AV1 video codecs	G.711, G.729, limited HD codecs
Performance	Kernel 6.x, improved RTP jitter buffer	Kernel 5.x, basic RTP handling

VoIP Calls Server on Debian 12 LTS combines enterprise telephony with long-term stability, making it the choice for mission-critical communications requiring guaranteed support and security.

Related Links

Art Group products on Azure Marketplace
Art Group official website

Why Choose Art Group Images?

High-performance VMs, expertly configured and constantly updated to meet your evolving needs—secure, efficient, and cloud-optimized.

Disclaimer: This offering leverages open-source components and is fully compliant with Azure Hybrid Benefit. All trademarks are the property of their respective owners. Asterisk is a trademark of Sangoma Technologies Corporation. Debian is a registered trademark of Software in the Public Interest, Inc. This product is offered by Art Group, which is not affiliated with, endorsed by, or sponsored by Sangoma Technologies Corporation or the Debian Project. Art Group does not provide commercial licenses; many products are available as free, demo, or open-source versions.