[China Telecom value-added business Study Notes] 3 value-added voice services

Author: gnuhpc
Source: http://www.cnblogs.com/gnuhpc/

1. One Card and multiple numbers :( single sim multiple number-ssmn)

• Provide multiple phone numbers as the secondary numbers for mobile users with one SIM card
• Caller: You can use the primary or secondary number to initiate a call.
• Called: You can choose to receive calls for different calls at different times.
• Allows users to select a secondary number to send and receive text messages.

Networking Solution

Mo call process example and flowchart: Based on ISUP

The access code is used to trigger services. Therefore, route data of the access code must be prepared on the switching device.

Call flowchart:

 

Mt call process example and flowchart: In-based

T-CSI (called user contract information) Intelligent Network Service trigger data needs to be set for its secondary number in the HLR of the primary number.

Call flowchart:

Note that the signaling between SSP and the one-card multi-number business platform is different between the mots.

 

2. IVR (Interactive Voice Response, Interactive Voice Response ):

By dialing a specified number, you can listen to and send voice information as prompted, or participate in interactive services such as chat and dating.

Network Structure:

Vag:

• Frontend HOST: Traffic forwarding, routing, ticket generation, and traffic statistics
• Voice Gateway: Implements real-time conversion of No. 7, PRI, and H.323 to achieve real-time conversion of voice and IP Packets
• Vro: acts as an access point for vag to connect to the data network.

 

CP/SP (Voice platform)
Structure Division

• Access layer: Call Distribution, network device access, etc;
• Business control layer: Business scheduling, authentication and billing authorization, intelligent route management, and statistical maintenance; business control layer: Business scheduling, authentication and billing authorization, intelligent route management, and statistical maintenance;
• Data access layer: data access proxy.

Business Process

• The user calls the access code.
• Call requests are forwarded to the voice platform over the telephone network.
• Voice platform processes user request information (voice interaction with users)
• The voice platform synchronizes timing and billing, records user logs, and other background processing ......

 

3. VOICEMAIL:

The user applies for services from the carrier and sets call transfer. When the caller calls a business user in the case of busy or no response, the user can leave a message after receiving a prompt from the voicemail;

The business user can then dial the voice mailbox to listen to the message.

Comparison of mobile Secretaries:

Voice mail features: original information, which has not been reposted and is not manually stored, ensures information privacy.
Mobile Secretary features: when a call is called, no need to make a phone call, you can see that the phone is not answered. The message is sent manually without capacity restrictions. The information is transmitted only through stable voice and SMS, no additional storage is provided to ensure the information delivery rate.

 

Author: gnuhpc
Source: http://www.cnblogs.com/gnuhpc/