LevelOne VOI-7100 - Manual (Page 72)

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5.5. 3-Way Conference Calling
Applications:
The Call Transfer and 3-Way Conference Call applications are for calls among
Parties A, B, and C. Three parties are registered to SIP server with either
fixed real IP or private IP. There are two kinds of call transfer; Blind Transfer
and Attendant Transfer.
Blind Transfer:
1. Party A calls Party B.
2. While in conversation, Party B may press Transfer key, and should hear a
dial tone.
3. Party B press [Party C number] # and hang up to transfer to Party C.
Attendant Transfer:
1. Party A calls Party B.
2. While in conversation, Party B may press Transfer key, and should hear a
dial tone.
3. Party B press [Party C number] # and talk to Party C.
4. Hang up from Party B, and then Party A will transfer and connect to Party
C.