Small businesses are always on the lookout for cost-effective and efficient communication solutions that can scale as they grow. That’s where small IP PBX  systems step in, bridging the gap between affordability and the advanced features businesses increasingly require. But with so many options on the market today, narrowing the choices can be a daunting task. This post explores the key differences between various small IP PBX systems , discusses their performance metrics, evaluates compatibility with existing infrastructure, and breaks down the cost-benefit dynamics to help businesses make the best decision.   Table of contents: Differences Between Small IP PBX Systems Performance Metrics Call Handling Capacity Scalability and Reliability Compatibility With Existing Infrastructure and Future Expansion Cost Benefit Analysis for Different Use Cases   Differences Between Small IP PBX Systems  Small IP PBX systems vary significantly in feature sets, usabi...