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This topic describes the configuration objective, network, and data plan for the traditional PBX interworking scenario.
Target
You can configure scenarios based on customers' requirements. The scenario configuration listed in Table 1 is used as examples in this topic.
Table 1 Configuration Objective
Intra-office number segment |
ϒ⁄Original PBX number segment: 5000-5019 ϒ⁄New number segment: 7000-7019 |
Long number segment |
ϒ⁄Original PBX number segment: 83785000-83785009, as the long numbers of 5000 to 5009. New PBX number segment: 68905000-68905009 ϒ⁄New number segment: 68907000-68907009, as the long numbers of 7000 to 7009 The last four digits of a long number forms the short number. Users without a long number are non-Direct Dialing In (DID) users. |
Other numbers |
ϒ⁄Original main number: 83785888 New main number: 68905888 ϒ⁄New main number: 68907888 |
Dialing mode |
ϒ⁄Intra-office: The calling party makes a call by dialing a 4-digit short number. The short number of the calling party is displayed to the called party. ϒ⁄Outgoing: Make an outgoing call by dialing the called number without a prefix. For the DID user, the long number of the calling party is displayed. For the non-DID user, the new main number is displayed. ϒ⁄Incoming: The calling party dials main number + extension number to call a non-DID user, and dials the long number to call a DID user. NOTE: The newly added PBX and unified gateway users make outgoing calls through the network of carrier B. For the new DID users, the long number of the calling party is displayed. For the non-DID user, the new main number is displayed. |
Trunk type |
ϒ⁄Interconnection with carrier A: The PRA trunk is used. ϒ⁄Interconnection with carrier B: The PRA trunk is used. ϒ⁄Interconnection with original PBX: The SIP trunk is used. In this example, the PRA and SIP trunk are used. The R2, SS7 (including ISUP ), and QSIG trunks can also be used. In actual scenarios, negotiate with users and carriers to determine the trunk type. |
Data Planning
Before configuration, you need to plan the data based on the networking and user requirements.
1.Plan the user numbers
Table 2 Plan the user numbers
Short Number Segment |
Long Number Segment |
Associated Device |
Remarks |
50005009 |
8378500083785009 |
Original PBX |
Original DID users |
50105019 |
- |
Original PBX |
Original non-DID user |
70007009 |
6890700068907009 |
unified gateway |
New DID users |
70107019 |
- |
unified gateway |
New non-DID user |
- |
83785888 |
unified gateway |
Original main number |
- |
68907888 |
unified gateway |
New main number |
2.Plan the IP address
Table 3 Plan the IP address
NE |
IP Address |
Subnet Mask |
Gateway IP Address |
unified gateway |
192.168.10.10 |
255.255.255.0 |
192.168.10.1 |
NMS |
192.168.10.11 |
255.255.255.0 |
192.168.10.1 |
Original PBX |
192.168.10.12 |
255.255.255.0 |
192.168.10.1 |
3.Plan the trunk data
Based on the installation of boards and E1/T1 cables, plan the trunk data, as described in Table 4.
Table 4 PRA trunk data planning
E1/T1 Slot Number |
E1/T1 Port Number |
Office Direction Selection Code |
Office Direction |
Peer Office |
2 |
0 |
0 |
0 |
Carrier B |
2 |
1 |
1 |
1 |
Carrier A |
4.Plan the prefix
Table 5 Plan the prefix
Prefix |
Prefix Type |
Office Direction Selection Code |
Called Number Change |
Calling Number Change |
Remarks |
68907 |
Intra-office prefix |
- |
- |
- |
- |
0 |
National toll call prefix |
0 |
- |
ϒ⁄Index 1 means that the entire number is changed to the new main number. ϒ⁄Use the long number and short number. |
Dial without a prefix to make outgoing calls to the network of carrier B. |
00 |
International toll call prefix |
0 |
- |
ϒ⁄Index 1 means that the entire number is changed to the new main number. ϒ⁄Use the long number and short number. |
Dial without a prefix to make outgoing calls to the network of carrier B. |
1-9 |
Local call prefix |
0 |
- |
ϒ⁄Index 1 means that the entire number is changed to the new main number. ϒ⁄Use the long number and short number. |
Dial without a prefix to make outgoing calls to the network of carrier B. |
8378 |
Local call prefix |
2 |
- |
- |
Make an outbound call to the original PBX. |
022 |
Local call prefix |
2 |
- |
- |
Make an outbound call to the original PBX. |
68905 |
Local call prefix |
2 |
- |
- |
Make an outbound call to the original PBX. |
Parent Topic: Traditional PBX Interworking Scenario