Yeastar S-Series PBX supports remote extensions that help you to use your extension when you are at home or on a business trip. With remote extensions, you can work wherever you are and still be seamlessly integrated with the head office.
In this guide, we introduce how to register a remote extension using Yealink IP Phone. As the following figure shows, Yeastar S-Series PBX and users in different locations are in different network with their own private IP addresses.
Configuring Remote Extensions
Step 1. Configure port forwarding on the router.
Example: The router’s public IP is 22.214.171.124.
Since Yeastar S-Series PBX is behind the router, register to Yeastar S-Series PBX remotely, you need to forward the SIP port on the router which is connected to Yeastar S-Series PBX, so that all the packets received on the router WAN port (126.96.36.199:5060) will be forwarded to the Yeastar S-Series PBX (192.168.5.150:5060). Below is the setting page in a Linksys router.
Note: we must map UDP port 5060 and UDP port 10000-12000.
Step 2. Configure NAT settings in Yeastar S-Series PBX.
Login Yeastar S-Series PBX web interface and go to “Setting > General > SIP > NAT”, configure the NAT settings according to the directions below.
- NAT Type: choose “External IP Address”, you can choose “External Host” or “STUN” if you don’t have a static public IP address.
- External IP Address: fill in the router’s public IP address
- Local Network Address: fill in your local network segment and subnet mask (i.e.192.168.5.0/255.255.255.0)
- NAT mode: Yes
Step 3. Setup up an extension in Yeastar S-Series PBX. (i.e. 1000).
- NAT: Yes
- Register Remotely: Yes
Step 4: Register the extension 1000 on the IP Phone which is setup in a branch office.
Note: You have to set use the public IP address or host name of the router to register the extension.
As soon as I configure this, the Trunk to our provider does disconnect!
Is there something to take care of in addition to get this working?
Do you mean configure the port forwarding settings or the NAT settings on S Series PBX?
If it was NAT settings, I would suggest you to try add additional localnat to try, assume your SIP trunk's server IP address is a.b.c.d, try add another localnet as bellow(Setting > General > SIP > NAT):
If this doesn't work, I would suggest you to create a ticket and ask help frm Yeastar Support Team.
This document is incomplete. What about Auto Provisioning for remote phones?