Multi-Tech Systems MVP210-SS - Manual (Page 51)

QS: Phonebook Example MultiVOIP User Guide
51
Phonebook Example
Flagstaff Office
204.16.49.75
8-Channel
Analog VoIP
(MVP810)
PSTN
PBX System.
Main Number:
777-5600
30 extensions
Area: 520
Santa Fe Office
PBX System.
Main Number:
444-3200
40 extensions
PSTN
204.16.49.74
8-Channel
Analog VoIP
(MVP810)
Area: 505
PBX System.
Main Number:
333-2700
204.16.49.73
24-Channel
Digital VoIP
(MVP2410)
PSTN
Boise Office
Area: 208
90 extensions
IP
Network
Each Outbound Phonebook contains two
pairs of entries, tw o entries for each
remote site. Whenever an out-of-tow n
employee dials a 12-digit number
beginning w ith the listed 5-digit
destination pattern (9+1+area code) of
another company location, the PBX
hands the call to the voip system. The
local voip strips off the “ 9” and directs
the call to the IP address of the remote
voip. The remote voip receives the call
and hands it to its PBX. The PBX then
completes the call to the PSTN.
The one-digit Outbound destination
patterns pertain to 3-digit calling
betw een company employees.
Inbound Phonebook
One Common Situation
V oip Example. This company has offices in three
different cities. The PBX units all operate alike.
N otably, they all give access to outside lines using
“ 9.” They all are ‘smart’ enough to identify voip calls
w ithout using a special access digit (“ 8” is used in
some systems). Finally, the system operates so that
employees in any office can dial employees in any
other office using only three digits. H ere are the
phonebooks needed for that system.
Each Inbound Phonebook contains
two entries. The first entry (4 digits)
specifies how incoming calls from the
other voip sites w ill be handled if
they go out onto the local PSTN.
Essentially, all those calls come to the
receiving voip w ith a pattern
beginning with
1+area code . The local
voip removes those four digits
because they aren’t needed w hen
dialing locally. The local voip
attaches a “ 9” at the beginning of the
number to get an outside line. The
PBX then completes the call to the
PSTN.
The second Inbound Phonebook entry
(1 digit) is for receiving calls from
company employees in the other tw o
cities. The out-of-tow n employee
simply dials 3 digits. The first of the
three digits is uniquely used at each
site and so acts as a destination
pattern (Boise extensions are 7xx,
Santa Fe extensions 2xx, Flagstaff
extensions 6xx).
The local voip sees the pattern in its
inbound phone book and notes the
first digit (here either 2, 5, or 6).
To make the match, this first digit,
three-digit number.
specific extension identified by the
PBX. The PBX can then dial the
voip w ill send all three digits to the
added back once again so that the
field. This first digit must then be
2, 5, or 6 is put in the “ Remove Prefix”