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The Sangoma A511DE card features 22 ports for BRI connections and a PCI Express network interface. This card also includes an onboard echo cancellation feature to further boost the card's carrier-grade voice quality. Eleven BRI modules on the Sangoma A511DE house two BRI ports each, making up the card's 22 total BRI ports.
When disassembled, the Sangoma A511DE consists of one base A500 PCIe card and four Remora daughterboards. Each Remora then offers three open sockets for the BRI modules. In total, up to four Remoras and 12 BRI modules can rest on the Sangoma A511DE's base card. The entire Sangoma A500 series is designed to be completely scalable, up to 24 BRI ports.
