3Com MSR 50 Series Configuration Manual page 2302

2302 C 133: D P
HAPTER IAL
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LAN ONFIGURATION
Subscribers in one PBX network can make ordinary calls to remote subscribers in
the other PBX network over a VoIP network.
There are a financial department, market department, and sales department at
both place A (area code 021) and place B (area code 010). A department at place
A only needs to know the telephone numbers of the local departments and the
area code of place B when calling a department at place B. For example, the
financial department at place B can dial 3366 to call the local market department.
The financial department at place B can dial 0103366 to call the market
department at place A, and the caller identification displayed on the terminal at
place A is 0211234, namely, area code of place B + telephone number of the
financial department at place A.
Network diagram
Figure 667 Network diagram for a voice dial plan
Market Dept. 3366
Financial Dept. 1688
PBX
Sales Dept. 2323
Configuration idea
The PBX (calling side) at place B changes the called number to an intermediate
number
The PBX (called side) at place A changes the received intermediate number to a
local number before initiating the call.
Configuration procedure
The following configuration supports dial plan-based calls from place B to place A
only.
Configuration on the router at place B
■
# Set the IP address of the Ethernet interface to 2.2.2.2.
<RouterB> system-view
[RouterB] interface ethernet 0/0
[RouterB-Ethernet0/0] ip address 2.2.2.2 255.255.255.0
[RouterB-Ethernet0/0] quit
# Configure a number substitution rule list for called numbers of outgoing calls.
<RouterB> system-view
[RouterB] voice-setup
[RouterB-voice] dial-program
[RouterB-voice-dial] number-substitute 21101
Router B
FXO line 1/0
FXO line 1/1
Eth0/0
2.2.2.2/24
FXO line 1/0
WAN
Eth0/0
FXO line 1/1
1.1.1.1/24
6788
Market Dept.
Router A
Financial Dept. 1234
PBX
Sales Dept. 6565