User guide

Chapter 5: Phonebook Configuration
Multi-Tech Systems, Inc. 72
Phonebook Examples
North America
The following example demonstrates how Outbound and Inbound Phonebook entries work in a situation of
multiple area codes. Consider a company with offices in Minneapolis and Baltimore.
Notice first the area code situation in those two cities: Minneapolis’s local calling area consists of multiple
adjacent area codes; Baltimore’s local calling area consists of a base area code plus an overlay area code.
Mpls
612
NW
Suburbs
763
St. Paul
& Suburbs
651
SW Suburbs
952
5
Company
VOIP/PBX
SIte
5
Baltimore
410
Baltimore/
Outstate MD
Overlay
443
Company
VOIP/PBX
SIte
...
Figure 5-7: North America example
An outline of the equipment setup in both offices is shown below.
IP
Network
Digital
VoIP
200.2.10.3
T1
717-5170
PBX
-5171
-5172
-517 3
-5174
Company HQ.
Minneapolis
North Sub.
area 763
Local-Call
Area Codes:
612, 651,
952
325-7001
R
o
u
t
e
r


Digital
VoIP
200.2.9.7
T1
Baltim ore
Sales Ofc.
area 410
PBX
Overlay
Area Code:
443
-7002
-7003
Figure 5-8: Equipment setup example