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VoIP Networks without PSTN — Example 4
Page 3-13
VoIP Networks without PSTN — Example 4
One Hunt Group (60 Channels Across Two E1s)
This dialing scheme uses one hunt group spanning two E1 (Euro PRI) trunks to make a single
60 channel trunk.
Hunt groups are called voice numbering plans in the AVNDS. Voice numbering plans relate
phone groups and destinations. In this example, the voice daughtercards are using the top
down hunt method to determine where new calls will be routed.
Example 4 — One Hunt Group (60 Channels Across Two E1s)
LEGEND for Diagram Components
PBX #1 Configuration PBX #2 Configuration
— Expects to receive four digits on trunks (J) or (K)
and then uses these digits to route calls to lines (A) .
— Expects to receive four digits on trunks (L) or (M)
then uses these digits to route calls to lines (B) .
— Routes calls starting with 1 to lines (A) . — Routes calls starting with 2 to lines (B) .
— Routes calls starting with 2 to trunks (J) or (K) , and
then the VoIP network uses these digits to route calls to
trunks
(L) or (M) according to the hunt method used
— Routes calls starting with 1 to trunks (L) or (M) ,
and then the VoIP network uses these digits to route
calls to trunks
(J) or (K) .according to the hunt
method used.
Extensions
off of PBX #1 (A)
Extensions
off of PBX #2
(B)
PBX #1
PBX #2
1000-
1999
2000-
2999
Voice
Daughtercard
#1
IP 192.168.11.2
Port 1720
Voice
Daughtercard
#2
IP 192.168.12.2
Port 1720
WAN
(L)
(M)
(J)
(K)
1000 to 1999
2000 to 2999
Hunt Group
Hunt Group
Euro
PRI
Euro
PRI
Euro
PRI
Euro
PRI