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Call backup, Call services configuration task list, Configuring the call hold mode – H3C Technologies H3C MSR 5600 User Manual

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subscriber C (the final recipient). After Subscriber A hangs up, the call between subscriber B and

subscriber C is established. This is call transfer.
There are three types of call transfer:

Call transfer without notification—The originator hangs up before receiving ringback tones from
the final recipient.

Call transfer with early notification—The originator hangs up after receiving ringback tones from
the final recipient and before speaking with the final recipient.

Call transfer with notification—The originator hangs up after speaking with the final recipient.

During the call transfer process, if the recipient does not support call transfer or the final recipient is busy

or provides no reply, the initiator can re-establish the original call.

Call backup

The calling party might fail to receive a response after initiating a call to the called party through the IP

or PSTN network. In this case, if there is a backup link (PSTN link or VoIP link) to the called party, the
calling party can re-initiate a call to the called party over the backup link. This is call backup.

Call services configuration task list

Call waiting, call backup, call transfer are enabled on the device by default. No configurations are

required for them.
To configure call services, perform the following tasks:

Tasks at a glance

(Optional.)

Configuring the call hold mode

(Optional.)

Configuring call forwarding

Configuring the call hold mode

There are two call hold modes:

Silent mode (inactive)—During call hold, the held party hears silence. This mode is configured on
the holding party (the initiator of call hold).

Unidirectional playing mode (sendonly)—During call hold, the held party hears tones or music
played by a third-party music server. To play tones, you need to configure the sendonly keyword on

the holding party. To play music on hold by the third-party music server, you must configure the

sendonly moh-number string option on the SIP trunk device and configure the inactive keyword on

the holding party. For information about configuring a SIP trunk device, see "Configuring SIP trunk."

To configure the call hold mode:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter voice view.

voice-setup

N/A