E&M interface is a private analog trunk interface of PBX, of which the information and
connection signal are separated. It has two types: two line E&M and four line E&M. During
interconnection of E&M, you must adopt the same dialing way, signal interface, and E line
should be connected to the M line of opposite side. And it is necessary to configure a private
E&M interface card for PBX.
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For VOIP GATEWAY32, FXO supports IP-To-PSTN, PSTN-To-IP service, provides
PSTN Route, Fall Back For IP Route Failure, Switch route by dialing special key, and Lifeline
for power or network failure;
Lifeline port only support Switch route by dialing special key and Lifeline for power failure.
