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| Specification | Description |
|---|---|
| Type | 4-wire S0 bus |
| AC Impedance | Line matched |
| Maximum tap length | 500m |
| Protocol support | Euro-ISDN |
VOIP
In order for Echo to collect call audio information, it must be installed on a computer that has an additional network card connected to a mirrored port on a local managed network switch.
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