The architechture is the best part of the 2600hz stack - it is the only product which can scale into different geographic regions and failover without horrible stretched clusters. The choice of erlang whilst it seems tough at the start is pure genius once you get under the hood.
As a global customer we also engage with their support teams which is also really great. Review collected by and hosted on G2.com.
The call center app is good - but it is lacking in the analytics.
Getting data out of the platform is hard - other than writting an MQ interface it is hard to get data out - it would be great to see an exporting function or an appliance they support (with a kazoo app) that you can configure to point at a database or datawarehouse like snowflake, data bricks etc Review collected by and hosted on G2.com.