Chapter 4 – Configuring Your MultiVOIP
56 MultiVOIP® Voice/Fax over IP Gateways
E&M Interface Types
There are five different types of the E&M interface and the MVP210/410/810 models support them all; but Type
IV is largely unused and is not described in this section. The figures that follow show the pin assignments for the
MVP RJ48 connector when used in the E&M jacks on the back of the unit as well as how the signals are used for
types one, two, three and five. Common ground between the MultiVOIP and PBX is required for all E&M Types
except Type II. Two and four wire audio is available for all E&M types
The illustration that follows shows MultiVOIP E&M Pin assignments and RJ48 Jack.
The illustration that follows shows E&M line types.
The illustration that follows shows audio wiring.
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