Uplink Skype to SIP Adapter is a legacy Windows-based software gateway developed by NCH Software designed to bridge standard SIP-based VoIP systems with the proprietary Skype network. 💡 Core Functionality
The software functions as a bidirectional translator between two completely different protocols:
Protocol Translation: It bridges the open-industry SIP (Session Initiation Protocol) standard used by thousands of phone companies and IP phone manufacturers with the closed, proprietary Skype network.
Two-Way Communication: It allows users to make outbound calls from a corporate PBX out to the Skype network, and routes inbound calls from Skype users directly back into a local IP-PBX. 🛠️ Common Use Cases & Setup
Organizations historically deployed Uplink to expand their reach and leverage cheaper calling alternatives:
IP-PBX Integration: Businesses connected Uplink to virtual IP PBX systems—such as NCH’s own Axon Software or 3CX—acting as a cost-effective “Skype trunking” line.
Desk Phone to Skype Mapping: IT administrators configured dial plans inside the PBX (e.g., dialing a speed-dial extension like 501 from a physical SIP desk phone) to trigger an outbound call to a specific Skype ID like “username”.
Inbound Call Center Routing: Inbound calls from Skype users were passed over the SIP connection where the corporate PBX treated them like regular incoming phone calls, filtering them into standard automated menus (IVRs), queues, or specific sales departments. ⚠️ Critical Compatibility Note (2026) Uplink Skype to SIP Adapter – NCH Software
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