Figure 100 PSTN to PSTN Example - Call Rule
13.9.3 Configuration Details: IncomingThe branch office ZyXEL Device needs to have an incoming authentication account configured. This consists of a username and password. This account must match the username and password of the outgoing authentication account of the headquarters’ ZyXEL Device. This can be configured in the VoIP > Trunking > Peer Call screen.
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