ZyXEL Communications P-2602H - Manual (Page 188)

Chapter 12 VoIP Trunking
P-2602H(W)(L)-DxA User’s Guide
188
Figure 115 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 116 PSTN to PSTN Example - Incoming Authentication To Device C
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.