Multitech MVP200 User Giude page 9

Chapter 1 - Introduction and Description
connected directly to your fax machine. In this situation, you would use the FXS interface which has
two options: loop start and ground start. Loop start is generally the correct interface to use.
If you want a user to be able to call into a facility and then use the local phone capability to dial out to
the public phone network, you can choose either the FXO or E&M interface. If you chose the FXO
interface, you can connect to the station side of your phone switch and be able to use all the features
of your local phone system. If you want to call out on the local phone network while you are at a
remote branch office, you would dial the MultiVOIP at the corporate facility and then dial an outside
line to access the local phone network.
If you use the E&M interface, you have more control over call management. The E&M connection
uses the trunk side of the phone switch; therefore, to access a trunk line, you would dial the trunk's
access number instead of an extension number. Also, the E&M interface has five signaling types that
are supported by the MultiVOIP.
Once you have mapped out your phone and Internet/Intranet connections, you can build your VOIP
phone directory database that connects your MultiVOIPs together. From the phone directory
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