Even though Internet access is a lot more reliable than it used to be, it still has a few issues that may cause major problems in the VoIP world. Some companies use a PSTN line as a backup of the main SIP trunk to avoid these potential issues. beroNet gateways are a good way to create such a PSTN backup line. Here is how to do it:
- Create a SIP account which will be the main account to where the calls will to be routed. To do so, navigate under the “SIP+” tab.
- Once the main sip account has been created, it is necessary to set a failover one: create a failover SIP account with the IP 127.0.0.1 which is the localhost of the gateway.
- This second SIP account needs to be set as the back-up of the first one. This is a new feature of the beroNet firmware 3.0 that is found under the “more” options of each SIP account. In this example, we modify the main SIP account and set the second one as a failover. which is the localhost of the gateway.
- Finally, we tell the gateway that when a call is coming from the failover SIP account, it needs to be routed to the backup ISDN line that we have connected to the gateway. In order to do so, create a Dialplan rule “from SIP (failover account) to Analog / ISDN.”
CAREFUL: be sure to change the match type of the SIP account to Manual and enter the IP address of the gateway.