ZyXEL Communications P-2602HWLNI - Manual (Page 224)

Chapter 12 VoIP Trunking
P-2602HWLNI User’s Guide
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Figure 133 PSTN to PSTN Example - Call Rule
12.9.3 Configuration Details: Incoming
The 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.
Figure 134 PSTN to PSTN Example - Incoming Authentication
12.9.4 Call Progression
The call is initiated by the manager dialing into the headquarter’s ZyXEL Device via PSTN. In
this scenario a VoIP link is established between headquarters and the branch office and then
the call is forwarded to Sales1 using PSTN.