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Voice Feature Guide 01

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
List of Value-added SIP Services

List of Value-added SIP Services

Table 1-13 describes SIP value-added services.
Table 1-13 SIP value-added services

Service

Definition

POTS User

ISDN User

Call waiting (CW)

If this callee-side service is provisioned and activated and the user who is engaged in an ongoing call is notified of a new incoming call, this new incoming call will be in waiting state and the waiting party hears the CW tone. The user can either accept, reject, or ignore this new incoming call.

Y

Y

Call hold (CH)

The CH service enables a user to temporarily disconnect an established call, that is, to stop sending media streams between the calling party and the called party, but not to release the session resources. When necessary, the call can be resumed. When a user needs to initiate or accept a new call but does not want to release the current call, the user can hold the current call and resume the call when necessary.

Y

Y

Three party conference call (3PTY)

This service provides one call connection for multiple users, that is, it allows 3 users to communicate with each other in the same call.

Y

Y

Conferencing

The conferencing service is a service on the originating side. It provides the multi-connection call capability for a user. That is, multiple users (participants) can participate in the same session at the same time.

Y

Y

Explicit communication transfer (ECT)

This service allows user A who is communicating with user B to transfer the call to user C so that a call is set up between user B and user C.

Y

Y

Call forwarding (CF)

The CF Communication Diversion (CDIV) service is a service on the terminating side. If a user has subscribed to the CF service and the call flow meets the call forwarding conditions, the call is forwarded to the preset forwarded-to party. The system supports the following 3 call forwarding services: call forwarding unconditional (CFU), call forwarding busy (CFB), and call forwarding no reply (CFNR).

Y

Y

Emergency call

A user can make an emergency call if the connected port is in remote block state and the SIP proxy server is normal and the dialed number matches the emergency digitmap.

Y

Y

Hotline

This service functions in this way: If the user who registers this service does not dial a number in a specified period (such as 5s) after picking up the phone, the system automatically connects this user to a fixed number (hotline number).

Y

Y

Message waiting indication (MWI)

This is a message prompt service, with which, the voice mail system (VMS) or unified message system (UMS) notifies users of changed number or status of messages, including emails, short messages, faxes, and leaving messages.

Y

Y

Calling line identification presentation (CLIP)

The CLIP service allows the calling number, name, and other information to be presented to the called party when the called party is alerted.

Y

Y

Calling line identification restriction (CLIR)

The CLIR service enables the calling party to restrict the presentation of the number, name, and multimedia information to the called party during call setup if the calling party has subscribed to the CLIR service and the called party has not subscribed to the RIO service.

Y

Y

Calling line identification restriction override (RIO)

The RIO service is a callee-side service that allows the number of the calling party to be presented to the called party even if the calling party registers CLIR.

Y

Y

Connected line identification presentation (COLP)

The COLP service determines whether to display the called party's identifier to the calling party based on the subscription data of the user and performs corresponding operations.

Y

Y

Callback

When user A calls user B and user B is busy or does not reply, if user A has registered the Completion of Calls to Busy Subscriber (CCBS) or Completion of Communication on No Reply (CCNR) service and the conditions are met, the AG automatically sets up a call when user B is available. The callback service includes the CCBS and CCNR services.

Y

Y

Malicious call identification (MCID)

A user who registers this callee-side service can identify the calling number if the user receives a malicious call or unsolicited call, such as a prank call or a phishing call.

Y

Y

Call hold with three parties

With this service, user A places user B on hold and initiates a new call to user C. Then, user A can switch between the call with user B and the call with user C, or release either of the calls.

Y

Y

Anonymous call service

This service does not allow the number of the calling party who registers this service to be presented to the called party.

Y

Y

Distinctive ringing

A callee-side service, with which, a user can set different ringing tones for different calling parties.

Y

N

Call release control

Call release control is classified into calling party release, called party release, and first party release. They are the 3 modes for call release.
  • Calling party release: A call is not released if the called party hangs up the phone but the calling party does not. In this case, if the called party picks up the phone again before the timer for calling party release times out, the call is connected and the two parities communicate with each other further. A call is released if the calling party hangs up the phone.
  • Called party release: A call is not released if the calling party hangs up the phone but the called party does not. In this case, if the calling party picks up the phone again before the timer for called party release times out, the call is connected and the two parities communicate with each other further. A call is released if the called party hangs up the phone.
  • First party release: A call is released if either of the calling party and called party hands up the phone.

Y

N

Multi-number service

Extended phone numbers are supported for SIP user configurations. The basic number is configured when a user is added or modified. A SIP user supports one basic phone number and multiple extended phone numbers. A SIP user can configure only extended phone numbers (does not configure the basic number). An extended phone number can be a local phone number or global phone number.

User registration and subscription can be initiated and managed by phone number. When a SIP user makes a call as caller, the first number functions as the active number. If registration fails, the first number in the following numbers is used for registration again. The rest may be deduced by analogy and the phone number for the first successful registration is bound to the call. When a SIP user makes a call as callee, the SIP access gateway (AG) selects a phone number for the call according to the URI carried in the Invite message.

Y

Y

Advice of charge services

A service that provides the call fees or rate for users. This service can be classified into the following 3 types according to different charging periods.
  • oAdvice of charge at communication set-up time (AOC-S): provides the rate for users when the rate changes upon the call setup and changes during the communication.
    NOTE:

    For the POTS service, the access node issues the converted charging pulse signal to a user terminal according to the rate.

  • oAdvice of charge during the communication (AOC-D): provides the call fees for users periodically during the communication.
    NOTE:

    According to ETSI TS 183043, the IMS AS identifies the line type and performs the corresponding operation. For the POTS service, the IMS AS issues the charging information "additional" to the access node. For the ISDN service, the IMS AS issues the charging information "accumulative" to the access node.

  • oAdvice of charge at the end of the communication (AOC-E): provides the call fees for users of the call just ended after the communication is ended.

Y

Y

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Updated: 2019-02-22

Document ID: EDOC1100067358

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