Test the scenario:
The Phone Number 11112222 pick up the telephone and dial the PSTN Phone Number
33334444(VIP-154NT_A), VIP-154NT will ring up but doesn’t answer the call. After
3
rings, the Phone
Number 11112222 will hear the prompt sounds then input the password
123#
. The Phone Number
11112222 will hear the dial tone then input
0#
. The IP address 192.168.0.2 (VIP-153T_B) will ring up
then it pick up the telephone and communication with the Phone Number 11112222.
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