Planet Technology VIP-321 - Manual (Page 59)

STEP 3:
Repeat the same configuration steps on VIP-321 B, and check the machine registration
status, make sure the registrations are completed.
Test the scenario:
1. Pick up the telephone and press the key on VIP-321 A.
2. Press the keypad: 200 shall be able to connect to the VIP-321 B.
Then the telephone set in VIP-321 B should ring. Please repeat the same dialing steps on VIP-321
B to establish the first voice communication from VIP-321 A.