The changes in the carrying amount of goodwill for the year ended December 31, 2022 are as follows:


(In thousands)	Network Solutions		Services & Support		Total
As of December 31, 2021	$	6,570	$	398	$	6,968
Goodwill from Business Combination with ADVA		272,797		77,661		350,458
Foreign currency translation adjustments		18,913		5,385		24,298
As of December 31, 2022	$	298,280	$	83,444	$	381,724

Our general policy is to qualitatively assess the carrying value of goodwill each reporting period for events or changes in circumstances that would more likely than not reduce the fair value of the reporting unit below its carrying amount. Related to the Business Combination with ADVA the Company recognized $350.5 million of goodwill upon the merger on July 15, 2022. Therefore, we decided to proceed directly to the quantitative test of goodwill and forego the qualitative assessment. We estimate the fair value of our reporting units based on an income approach, whereby we calculate the fair value of a reporting unit based on the present value of estimated future cash flows. A discounted cash flow analysis requires us to make various judgmental assumptions about future sales, operating margins, growth rates and discount rates, which are based on our budgets, business plans, economic projections, anticipated future cash flows and market participants. We also estimate the fair value of our reporting units based on a peer group analysis, whereby companies in the telecommunications industry or with a comparable product and market structure are used to calculate a fair enterprise value using revenue, EBITDA and debt multiples of trading value. Based on our analysis, management concluded that there was no impairment of goodwill as of December 31, 2022. No impairment charges on goodwill were recognized during the years ended December 31, 2021 and 2020.