Interconnect Two Yeastar P-Series PBX Systems
If a company has several branch offices, the frequent calls between the offices will result in large phone bills. By interconnecting the Yeastar P-Series PBX Systems in the offices, phone calls between the offices are regarded as free internal calls even if the offices are in different places, thus greatly reducing the company budgets. This integration guide gives configuration examples on how to set up interconnection between two Yeastar P-Series PBX systems via public IP address and Yeastar FQDN and make free calls.
Scenario
A company's headquarters is located in New York, while its branch office is located in Los Angeles, and both offices have deployed a Yeastar P570.
To save budget, the company wants to interconnect these two Yeastar P570 so that employees can make free calls between headquarters and branch office.
The following table lists the detail information of the PBXs in the two offices.- The two PBXs should NOT have the same extension numbers, or the calls between the two PBXs will fail.
- To distinguish the two Yeastar P570, the PBX in headquarters is named as Headquarters PBX while the PBX in branch office is named as Branch PBX in the later contents.
| Headquarters | Branch office | |
|---|---|---|
| Device | Yeastar P570 | Yeastar P570 |
| Firmware | v37.6.0.46 | v37.6.0.46 |
| Extension | 1000-1200 | 2000-2050 |
Networking topology diagrams
The integration between two Yeastar P570 can be implemented via FQDN and public IP address.
- FQDN (Recommended)
- In this guide, the integration between the two Yeastar P570 via FQDN is based on the following environment:
- Public IP address
- In this guide, the integration between the two Yeastar P570 via public IP address is based on the following environment:
