Case Study: Nimble Group achieves scalable, redundant 1,000‑agent telephony with Digium Asterisk

Nimble Group - Customer Case Study

Nimble Group, a Cape Town–based credit management company, faced rapid expansion after acquiring Norman Bissett & Associates and needed a scalable, highly available telephony system to support call center growth from a few dozen agents to hundreds. Having previously used Asterisk, Nimble engaged Clarotech to replace a single non‑redundant server with an infrastructure that would minimize downtime and sustain 24/7 call center operations and web‑integrated call management tools.

Clarotech deployed Asterisk on SUSE Linux Enterprise with SUSE High Availability on an Intel Modular Server platform—six compute modules and a SAN—configuring clustered pairs scattered across call center quadrants so each module could handle ~200 calls and serve as backup, limiting disruption to at most a couple minutes per caller. The solution supported the rollout from an initial 60 users to about 1,000 by July 2010, delivering a flexible, redundant telephony platform that met performance needs and allowed continued growth.

Nimble Group

Colin Fair

Managing Director