IP PABX solutions offer many features, the most important is the ability to make and receive calls over the internet. Other beneficial features include caller ID, call waiting, call forwarding, voicemail, and many others. IP PABX offers excellent call quality and reliability while saving money for businesses on long-distance charges. IP PABX is also scalable and can be easily integrated with other business systems, such as customer relationship management (CRM) systems which makes it easier for businesses to keep track of customer interactions and follow up on sales leads and is suitable for businesses of all sizes.