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V300 VoIP Telephone Adaptor/Router
YML768 Rev1
1.3 Application
Please refer to the following diagram for a typical application of the V300. The V300
provides you with normal VoIP and router/switch capabilities, so it can work as a router and
a VoIP ATA (analog telephone adapter) at the same time. Figure 1 illustrates a simplified
connection for the V300. In addition to providing basic VoIP calls, the V300 is also capable
of handling your landline telephone calls (PSTN Pass-through) and provide you with a
“LifeLine” service if your V300 experiences network problems. The following is a brief
explanation of LifeLine and PSTN Pass-through:
Figure 1
LifeLine
Unlike other VoIP devices, the V300 integrates IP phone and landline telephone functions
in one box. When your VoIP service is unavailable, the landline telephone service can be
in operation. You can switch from VoIP to landline telephone automatically using the Auto
Switch feature, or switch manually by pressing the “##” key.
PSTN Pass-through
PSTN pass-through can best be described as a call waiting function, i.e. the ability to receive
incoming calls whilst engaged in another phone call. When a PSTN call arrives, the V300
can answer the call whether it is on-hook, on a VoIP call or on a PSTN call. This allows you
to respond to the incoming PSTN call accordingly. The detailed description of the PSTN
pass-through handling can be found in the User Manual Chapter 5 Call Handling.
