• CHAPTER 15 & 16• Service Provider VoIP Applications

and Services• Advanced Enterprise Applications

Service Providers:

• Cable companies

• Telco companies

• Wireless companies

Service Providers Needs:

• Carrier-class reliability and salability

• A shared platform for all subscribers-multitenancy

• Reduction of operational expenses

Subscribers Needs:

• Robust feature functionality

• Multimedia, predictive dialing, speech recognition, automatic call distribution (ACD)

• Full administrative control

• Rapid deployment

• Powerful intergration with CPE

Service Providers Applications:

• Microsoft Communicator

• Microsoft NetMeeting

• Cisco IP Phone

• PC-based softphone

• VoIP Integrated IM clients

VoIP Advantages:

• Equipment use and call control capacity are dynamic

• The distribution of call control logic and intelligence is more transparent and easy to manage

• The use of signaling resources is efficient

• Device provisioning and updates are done in a production environment and are simpler then similar work in PSTN

• Adding new features and applications over time is easy

• Remote-management and third party control are simpler because network resources are shared across applications

Case Study; Prepaid Calling Card:

• Subscriber purchases a prepaid calling card

• The card is activated through a RADIUS server

• Client uses a 1-800.. Number

• TFTP server provides automated prompts

• Client dials number to be connected to

• Billing computer correlates the called number (CDR) costs with amount on pre-paid card

• When pre-paid card has no credits the call is terminated

• User can add credits to the card

VoIP Peering Issues:

• Resolving numbering/dialing plan issues

• Interoperability issues on protocol standards and implementations

• Privacy and security issues with caller identity and validation, caller-ID call spoofing, voice spams….

Consumer Fixed Mobile Convergence (FMC):

• Can connect via broadband, cellular or public Wi-Fi

• Users are mobile through each system

• Connection to the PSTN via service provider

Consumer Fixed Mobile Convergence (FMC):

• Benefits

Migrating to VoIP:

• Phased migration

• Legacy PBX – VoIP

• QoS

• Cisco Unified Communications Manager

Enterprise VoIP Benefits:

• ROI

• Toll-bypass

• Applications

Click-2-Call

Microsoft NetMeeting

Cisco IP Phone

Cisco IP-based Softphone

Advanced Enterprise VoIP Benefits:

• Voice and Video Conferencing• WebEx

• Set-up and manage meetings

• Join and Leave meetings

• Tones and announcements when attendees join or leave

• During a conference• View a list of participants

• Share and view documents

• Allow text messaging (IM)

• Record store and play back conference

Presence-Aware Services:

• Buddy list on phone

• Call routing using availability features

• Enhanced missed call features

• Availability of users for ad-hoc conference

• Camp-on service

• Click-to-dial applications

• Enhanced contact center applications

Wi-Fi Enabled Phones:

• Calls get seamlessly switched from broadband, Wi-Fi, and cellular networks

• Cost savings from moving away from cellular networks

Better Voice Quality:

• Wide-band CODECS

• Adaptive multi-rate CODECS

• Robust against packet loss

End of Chapter 15 & 16