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What is the difference between CLI and NCLI routes, and how do they impact call quality and pricing in VoIP termination?
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CLI (Calling Line Identification) routes preserve the caller's number, ensuring better transparency and typically higher audio quality. These routes are generally more expensive but more stable and legally compliant.
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NCLI (Non-CLI) routes do not display the caller's number correctly or at all. These are often cheaper, used for gray routes, and come with risks such as call blocking or degraded quality.
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CLI is ideal for premium users or when legal compliance and long-term stability are required.
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NCLI is often used when price is a major factor, such as for call centers or short-term traffic testing.