SIP trunking (Session Initiation Protocol trunking) is a technology that lets your business make and receive phone calls over the internet instead of traditional phone lines. Think of it as a digital bridge that connects your phone system (PBX) directly to carriers in Germany and beyond with zero hops, maximum stability, crystal-clear quality.
With PBX.IM's SIP trunking service, you can:
Looking for a virtual phone number for business in Germany that does more than just calls? PBX.IM gives you a complete VoIP solution that helps you connect, scale, and manage communication across channels: calls, SMS, and WhatsApp, all in one place.

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Enjoy crystal-clear calling across Germany, from landlines to mobiles and beyond. Experience HD voice quality with 99.999% uptime, and choose local DID numbers in Berlin, Munich, Hamburg and other major cities, plus toll-free, shared-cost and mobile options tailored to your business.
Connect with customers via SMS and WeChat. Send reminders, confirmations, and marketing messages — all managed from one platform.
Let AI Agent answer calls 24/7 in Mandarin and English. Use Zoom Phone integration to make business calls directly within Zoom.
Leveraging Germany top carrier networks, we provide high-quality voice services with guaranteed connectivity and deep local expertise.
Deutsche Telekom's German mobile brand.

Second largest German mobile operator.
Telefónica's German mobile brand.
Build trust with German customers by using local, toll-free, and national numbers they recognize. Get DID numbers in Berlin, Munich, Hamburg and other major cities across Germany.
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Make and receive calls directly within Microsoft Teams, Zoom, or WhatsApp using your Germany phone numbers without switching between apps.
Keep your team productive, and give your customers a seamless experience.
PBX.IM integrates seamlessly with your existing business tools, CRM, helpdesk, website, or internal systems.
Your calls are routed through local German carriers for the best quality and reliability. Manage everything from one global platform, anywhere in the world.
Navigating Germany’s telecom regulations can be challenging. PBX.IM handles the compliance requirements for you, so you can focus on running your business without worrying about local regulations.
PBX.IM connects directly to tier-1 carriers in Germany for stable, high-quality voice with minimal latency. Redundant routing and automatic failover keep your calls running no matter what.
Customers are more likely to pick up when they see a local number. PBX.IM gives you geographic, national, and toll-free Germany numbers so your calls get answered.
Pay only for what you use with transparent per-minute rates. No hidden fees, no contracts, no unexpected charges on your bill.
Combine reliable Germany SIP trunking with unified communications including voice, video, messaging, and collaboration in one scalable platform.
Sign up, configure your settings, and start making calls to Germany in minutes with our self-service platform.

Every call is protected end-to-end. TLS encryption secures your call setup data, preventing interception or spoofing of who's calling whom. SRTP encrypts the actual audio, so no one can eavesdrop, even on public networks. With IP whitelisting, user-level permissions, and call destination restrictions, you control exactly who accesses your system. Built to meet GDPR, HIPAA-ready, SOC 2, and ISO 27001 standards.
PBX.IM ensures your SIP trunking meets Germany's MIIT regulations, including proper number registration, anti-fraud compliance, and direct partnerships with licensed state carriers. We handle the regulatory complexity so you stay connected and compliant.
Sign Up and Get Your SIP Trunk in Minutes.
How does SIP Trunk in Germany work?
SIP Trunking connects your PBX or call platform to the Chinese PSTN through licensed carriers, enabling inbound and outbound calling while complying with local routing requirements.
How much does SIP trunking cost in Germany?
There is no cost for the SIP Trunk service itself. Charges apply only for the calls made using the system, based on destination and usage.
Can I use local caller ID when calling Germany?
Yes, local caller ID is supported. The caller ID number must be owned and registered by the company making the calls.
Does PBX.IM support Germany compliance and regulation?
Yes. PBXIM works with compliant carriers and follows local regulatory requirements for documentation, routing, and caller ID usage.
How fast can I get set up?
SIP Trunk setup is straightforward and can be completed quickly. However, purchasing and activating a Germany number may take a few business days due to compliance requirements.
What call center features are included?
SIP Trunk customers have access to core call center features such as IVR, call queues, call recording, and other essential routing and management tools.
What else can PBXIM do for my business?
Beyond SIP Trunking, PBXIM provides global voice coverage, virtual numbers, advanced call routing, analytics, API integrations, and scalable communication solutions to support business growth.