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H3C Technologies H3C MSR 50 User Manual

Page 743

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Figure 743 Immediate start mode

Delay start—In this mode, the caller first picks up the phone to seize the trunk line, and the called
side (such as the peer PBX) also enters the off-hook state in response to the off-hook action of the

caller. The called side (PBX) will be in the off-hook state until it is ready for receiving the address
information. After it is ready, it will enter the on-hook state and this interval is the so-called dial

delay. The calling side sends the address information, and the called side (PBX) connects the call to

the callee. Therefore, the two parties can begin the communication.

Figure 744 Delay start mode

Wink start—In this mode, the caller first picks up the phone to seize the trunk line, and the called

side (such as the peer PBX) is in the on-hook state until receiving a connection signal from the calling
side. Then, the called side will send a wink signal to make an acknowledgement and enter the

ready state. Upon receiving the wink signal, the calling side begins to send the address information

and the called side connects the call to the callee. Therefore, the two parties can begin the

communication.

Figure 745 Wink start mode

Calling side

(E/M)

Called side

(M/E)

Send the called number

Conversation

Conversation

Pick up the phone, requesting for service

Pick up the phone to answer

Hang up

Hang up

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