HPE FlexNetwork MSR Series User Manual

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Call services
More and more VoIP-based services are demanded as voice application environments expand. On
basis of basic calls, new features are implemented to meet different application requirements of VoIP
subscribers.
Call waiting
When subscriber C calls subscriber A who is already engaged in a call with subscriber B, the call is
not be rejected if call waiting is enabled. Just like a normal call, subscriber C hears ringback tones,
while subscriber A hears call waiting tones that remind that a call is waiting on the line.
Subscriber A can answer the new call by pressing the flash hook or hanging up to end the call with
subscriber B. In the former case, subscriber B is held. In the latter case, subscriber A is immediately
alerted and can pick up the phone to answer the call originated by subscriber C (the waiting call).
Call hold
If subscriber A in a conversation with subscriber B presses the flash hook, the media session of
subscriber B is temporarily cut through and is held (in the silent state or listening to the waiting tones).
The system plays silent tones or dial tones to subscriber A, depending on the configuration. (The
system first plays dial tones and waits for the subscriber to dial. If the subscriber fails to dial within a
period of time, the system stops playing dial tones and the line stays on hold.). Subscriber A can
resume the call with subscriber B by pressing the flash hook again.
After pressing the flash hook, subscriber A hears dial tones and can initiate a new call. The setup
flow for the new call is completely the same as the one for ordinary calls.
Call forwarding
After receiving a session request, the called party cannot answer the call for some reason. In this
case, the called party notifies in a response the calling party of the forwarded-to number so that the
calling party can re-initiate a session request to the new destination. This is call forwarding.
The system supports four different types of call forwarding:
• Call forwarding unconditional—With this feature enabled on a voice subscriber line,
incoming calls are forwarded to the predetermined destination, no matter whether the voice
subscriber line is available.
• Call forwarding busy—With this feature enabled on a voice subscriber line, an incoming call is
forwarded to the predetermined destination when the voice subscriber line is busy.
• Call forwarding no reply—With this feature enabled on a voice subscriber line, an incoming
call is forwarded to the predetermined destination when the voice subscriber line is not
answered within a period of time, which is configured by specifying Max Duration of Playing
Ringback Tones on the FXS, FXS or E&M line configuration page and defaults to 60 seconds.
• Call forwarding unavailable—With this feature enabled on a voice subscriber line, an
incoming call is forwarded to the predetermined destination when the voice subscriber line is
shut down.
Call transfer
Subscriber A (originator) and subscriber B (recipient) are in a conversation. Subscriber A presses the
flash hook and the call is put on hold. Subscriber A dials another number to originate a call to

HPE FlexNetwork MSR Series Specifications

General

Brand	HPE
Model	FlexNetwork MSR Series
Category	Network Router
Language	English