CSG, also known as CSG Systems International, is a publicly owned company headquartered in the US, with NEC as its parent company. Founded in 1994, it employs approximately 6,890 individuals and reported $1.2B in revenue as of 2025. The company specializes in enterprise and telecoms software, functioning as a provider of business support solutions for the communications industry. Its solutions encompass cable and satellite care and billing, content management and monetization, convergent rating and billing, mediation and data management, and wholesale settlement and routing.

2025 Revenue

Founded

1994

Headcount

6,886

Headquarters

US

Primary Segment

Enterprise and telecoms software

Ownership

Publicly Owned

Deployments

19

News Summary:

On March 9, 2026, CSG Systems International shareholders overwhelmingly approved the company's planned acquisition by Japan’s NEC Corporation, moving the transaction closer to completion and signaling the end of CSG's independent journey on public markets. Previously, on March 3, 2026, the Data & Business Process Services Sector reported strong Q3 2025 results, with CSG's revenue beating estimates and its stock rising 11.8% compared to peers. This follows the February 26, 2026 announcement by NEC Corporation that it would acquire U.S.-based CSG Systems International Inc., a software company serving telecom and broadband service companies.

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CSG offers 6 products in the connectivity and cloud, telecoms tech, enterprise tech and media tech industries. CSG's product portfolio comprises of conferencing, ecommerce and customer journey technology, video business systems, enterprise and telecoms software and enterprise cloud.
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CSG's revenues were $1.2B in 2025. Caretta Research has split CSG's revenue into 5 different product categories, the largest of which is bSS/OSS, which represents 60% of CSG's revenue.
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CSG's customers primarily consist of telecoms companies. Examples of CSG's customers include Vodafone, Charter Communications and Comcast Corporation.

Example Customers

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