In Shenzhen, on 19 December 2025, OpenVox announced the official launch of the SWG‑4016E/4032E wireless gateway series, designed to securely connect GSM/WCDMA/LTE networks to VoIP systems. These devices combine the flexibility of eSIM with the robustness of physical SIM cards, providing a future-ready solution for mobile and VoIP telephony.
← News
Product
OpenVox launches SWG‑4016E/4032E eSIM gateways for GSM‑VoIP connectivity
OpenVox unveils its new eSIM gateways, capable of managing up to 256 eSIM cards and 32 physical ports for flexible, scalable mobile‑VoIP integration.
Technical specifications
The SWG‑4016E and SWG‑4032E models support 4G modules and provide HD voice service through codecs such as G.711U, G.711A, GSM, G.722, G.726 and G.729. The SWG‑4016E can host 16 physical SIM cards or 128 eSIMs, while the SWG‑4032E supports up to 32 physical cards or 256 eSIMs. Cards are managed through a web interface, with eSIM mode able to store 8 eSIMs per channel and 8 eSIMs per port. SIM mode allows one card per channel.
Advanced features
The gateway supports hot-swapping SIM cards, ensuring uninterrupted service continuity. It is compatible with popular VoIP platforms such as Asterisk, Issabel, 3CX, FreeSWITCH and VOS, enabling seamless integration for operators and businesses.
Availability and distribution
The SWG‑4016E/4032E gateways are now available worldwide through OpenVox’s distribution network and partners. Customers can request a quote, demonstration or technical consultation by contacting the OpenVox sales team or their authorized local partner.