User guide

Chapter 5 – Configuring the Phone Book
98 MultiVOIP® Voice/Fax over IP Gateways
The figure that follows shows Outbound Phonebook entries for the VOIP located in the company’s Baltimore
facility.
The entries in the Minneapolis VOIP’s Inbound Phonebook match the Outbound Phonebook entries of the
Baltimore VOIP, as shown below.
To call the Minneapolis/St. Paul area, a Baltimore employee must dial eleven digits. This assumes that the
Baltimore PBX does not require an 8 or 9 to seize an outside phone line.
If a Baltimore employee dials any phone number in the 612 area code, the company’s VOIP system automatically
handles the call. When receiving the call, the Minneapolis VOIP removes the digits 1612. But before the
suburban-Minneapolis VOIP can complete the call to the PSTN of the Minneapolis local calling area, it must dial
“9” (to get an outside line from the PBX) and then a comma (which denotes a pause to get a PSTN dial tone) and
then the 10-digit phone number which includes the area code (612 for the city of Minneapolis; which is different
than the area code of the suburb where the PBX is actually located -- 763).
Similar events occur when the Baltimore employee calls numbers in the 651 and 952 area codes because
numbers in these area codes are local calls in the Minneapolis/St. Paul area.