Google Cloud中Asterisk相关：GCE实例SIP提供商连接是否合规？
Great question! Let's break this down clearly based on GCP's policies and common SIP deployment patterns on GCE:
Core GCP Restriction Clarified
First, let's confirm the baseline rule: Google Compute Engine (GCE) explicitly prohibits direct connections to the Public Switched Telephone Network (PSTN). This means you can't deploy a PSTN gateway on GCE that directly interfaces with physical telephony lines (like E1/T1) or connects directly to a PSTN carrier's network without a third-party intermediary.
SIP Provider + GCE IP PBX: Allowed Scenario
The good news is your proposed setup—using a SIP provider to deliver telephony services to an IP PBX hosted on GCE—is fully compliant with GCP's policies, and here's why:
- In this architecture, your GCE-hosted IP PBX only establishes IP-based SIP trunking connections with your SIP provider's servers (typically over standard ports like UDP/5060, TCP/5060, or TLS/5061).
- The actual PSTN connectivity is handled entirely by the SIP provider, not your GCE instance. Your setup never directly interacts with the PSTN itself—you're just using GCE to host the IP PBX that manages internal unified communications (UC) and communicates with the SIP provider over the public internet or a private interconnection (like Google Cloud Interconnect).
Key Considerations to Stay Compliant
To ensure your deployment stays within GCP's guidelines, keep these in mind:
- Adhere to GCP's Acceptable Use Policy (AUP): Don't use the setup for spam, fraudulent calls, or any other prohibited activities outlined in GCP's terms.
- Firewall Configuration: Ensure your GCE instance's firewall rules allow inbound/outbound traffic to/from your SIP provider's designated IP ranges and ports (including both SIP signaling ports and media ports, usually UDP 10000-20000 for RTP).
- Static IP (Recommended): Assign a static external IP to your GCE IP PBX instance to avoid connection issues if the instance's public IP changes.
- Avoid Direct PSTN Gateways: Never deploy a physical or virtual PSTN gateway on GCE that directly connects to the PSTN—this is the only scenario that violates the core restriction.
内容的提问来源于stack exchange，提问作者v21networks
