The S20 contains support for up to 20 extensions, 10 concurrent calls and a micro SD slot for call recording expansion. Additionally, it can be populated by 1 UMTS card for 3G calls or a combination of up to 4 FxS or FxO ports.
The S20 contains support for up to 20 extensions, 10 concurrent calls and a micro SD slot for call recording expansion. Additionally, it can be populated by 1 UMTS card for 3G calls or a combination of up to 4 FxS or FxO ports.
