United States · 
Who invested in Sonus Networks?
Sonus Networks's investors include Bessemer Venture Partners, CRV, Matrix Partners, North Bridge Venture Partners & Growth Equity and Samsung Electronics, and 5 more on record.
United States · Funded startup
Who invested in Sonus Networks
One round we have observed, with the 10 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
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Funding summaryUpdated 27 Oct 2026
$23Mraised across 1 round since 1999, from 1 source
- Latest round
- Round, $23MDec 1999
- Investors
- 10
The rounds
- Dec 1999
Founders and team
From Sonus Networks's own website: 1 on the team.
- Call ControllerC3 Call Controller
Everyone who backed them
Williams CommunicationsInvestment firm1round
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Quick answers about Sonus Networks
How much has Sonus Networks raised?
Sonus Networks has raised $23M across 1 round since 1999.
When did Sonus Networks last raise?
Sonus Networks's most recent round was an Undisclosed round of $23M in Dec 1999.
What was Sonus Networks's biggest round?
Its most recent round, $23M in Dec 1999, is also its largest on record.
Who backed Sonus Networks first?
Sonus Networks's first round on record, in Dec 1999, was backed by Bessemer Venture Partners, CRV and Matrix Partners and 7 others.
What stage is Sonus Networks at?
Sonus Networks's latest named round is an Undisclosed round, in Dec 1999.
Where is Sonus Networks based?
Sonus Networks is based in the United States.
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