Issue Description
Version Information：None
Network Diagram：IP Phone-A ------------- LAN Switch -------------- IP Phone-B
Fault Symptom：eSpace 7800 serial IP phone, could call each other without SIP server, but customer don’t want to use IP address, should use short number to make a call.
Handling Process
1. Make sure two IP Phone connect to a same switch, and should be in the same vlan, IP phone A could PING IP phone B.
2. Please login to web configure page of IP phone A, choose “Phone”, then go to “Dial Plan”, will find “Replace Rule”.
Choose “Prefix”, and input the short number of Phone B， choose “Replace”, and input the “IP address” of Phone B.
Then click “Add”.
3. The same operation should be done in Phone B.
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