Figure 1-4: HT503 FXO Port Configuration

Below (Figure 1-4) is the FXO Port related configuration. Please configure only the mentioned parameters and do not change and leave all other parameters as default:

Account Active:

Yes

SIP User ID: Use any digits you want. HT503 just need some digits here to send to surveillance box therefore you can put ANY digits here. Here “110” is used as example.

SIP Registration:NO

This is very important as there is NO SIP Server involved and we just manipulate the IP of each other device to make them work with each other.

Outgoing Call w/o Registration: YES

This is important also because NO SIP Server therefore no credentials involved here. The application is assumed in a secure and trusted LAN environment.

Local SIP Port:

5062

This is the port HT503 FXO port will listen to.

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Grandstream Networks manual HT503 FXO Port Configuration