PDF of this tutorialFinally, without services, next-generation switches would not be able to generate the voice revenue that currently provides 80 percent of overall service provider revenue. The following Class-4 and Class-5 services need to be supported by these switches. As stated before, several of these services may be implemented in the softswitch (call control platform) without the need for an external AS. The more complex services such three-way conferencing may require the need for an AS with multimedia support. Until ASs become more capable in terms of supporting more complex services and providing robust easy-to-use service creation environments (SCEs), the need to deploy these services outside of the softswitch environment is less compelling.
- Dial tone*
- Basic dialing*
- Basic 7/10 routing
- Announcements
- Billing record creation
- Call blocking/allow
- Call transfer
- Call forward
- CF busy
- CF no answer
- 3-way calling
- Toll restriction
- Outbound restriction
- Calling name delivery
- Calling number delivery
- Int. Dial: 011
- Premium rate: 900/976
- Toll free: 8xx
- Operator: 0/00
- E–911
- LNP
- Primary interexchange carrier (PIC)
- CALEA
- Selective call reject
- Selective call accept
- Remote call forwarding
- Speed dialing 30
- Anonymous call reject
- Caller ID block
- Automatic callback
- Automatic recall
- Call waiting
- Calling identity delivery on call waiting
- Customer-originated trace
- Distinctive ringing/call waiting
- Selective call acceptance
- Selective call forwarding
- Selective call rejection
