Broadband and Wide Area Network Services

1. Broadband and Wide Area Network Services Carrier Gigabit Ethernet Multi Protocol Label Switching Vs. IP VPNs T-1 & T-3 SIP Trunks Security Network Topology Backup Services Managed Services

2. Carrier Network Services Remote worker Branch office Branch office Your home (Public switched telephone network) Headquarters

3. Connections to Carriers’ NetworksLegacy TDM Voice network Customer Premise Carrier DACS Switch Internet TDM Voice PBX

4. Connections to Carriers’ NetworksVoIP to customer network Customer Premise Carrier IP Voice/Data network Switch Customer IP PBX

5. Carrier Gigabit Ethernet • Site to site links in metro areas • Internet access • Flexibility • Speeds • Scalable capacity • Fiber • Same protocol as LANs • Over copper • Slower speeds • Not available everywhere • Not suitable for traditional voice

6. High-speed core routers Overview of an MPLS Network MPLS Network Los Angeles Edge routers attach labels to customers’ packets Miami New Orleans • Edge routers connected directly to customers • core routers connected only to other routers

7. Access Lines provide service connections (TDM =T1, T3, SONET; IP = DSL, Ethernet)and the MPLS Network Can be on same circuit to carrier’s network Access lines Customer premises router LAN switch VoIP phone

8. IP VPNs – Using the Public Internet • Sending traffic over the public Internet • Encrypted • Cost savings • Site to site • Telecommuters • Remote salespeople

9. Secure tunnel over broadband, Internet, & MPLS Secure tunnel over high-speed access line Secure Remote Access to MPLS or IP VPNs MPLS NETWORK Telecommuter Headquarters' LAN Telecommuter’s laptop and headquarters have matching security tunneling protocols surrounding data.

10. 24 or 32channels 24 or 32 channels T-1 Mux T-1 Mux T-1 - Fiber, copper or wireless, 24 channels E-1 - Fiber, copper or wireless, 32channels T-3 – Fiber or wireless; 672 channels E-3 – Fiber or wireless: 480 channels T-1/T-3 Time Division Multiplexing What are the pros and cons of T-1/T-3 service? 1 2 3 4……..24 Each device assigned a time slot

11. Session Initiation Protocol (SIP) Trunking • A standardized signaling protocol in IP networks • Used to connect carriers to each other • Connects enterprise VoIP PBXs to carrier’s circuits • Used on the Internet • In VoIP PBXs • Trunks connected to the Internet • Combine VoIP and data • Different implementations by PBX manufacturers and carriers

12. How do we Choose Carrier Services? • Each group should explain the service assigned to their group by answering the questions below. • T-1 - Group 1 • T3 – Group 2 • Carrier Gigabit Ethernet – Groups 3 and 4 • Let us know the size of organization that would use it (small, medium, large) • For your service let us know: • Its speed • Multiplexers or switch needed to support it • Ability to increase capacity (scale) • Ability to shrink capacity if the company decreases in size • Does it support voice, data, and video? • Media it operates on • Disadvantages of this service

13. Hub and Spoke Topology Gigabit Ethernet Seattle Wide area network Los Angeles Centralized applications at headquarters T-1 at smaller sites Houston Miami

14. Outside Cable Reliability • What can go wrong in broadband links? • Back-up plans in the event of cable cuts or other carrier outages: • What are affordable options for small organizations? WiMAX tower Cell tower Verizon equipment AT&T equipment

15. Carriers’ Managed Services • For a fee (naturally) carriers will manage: • Routers • T-1/T-3 multiplexers • Ethernet switches • The data center • Security • Remote access • MPLS • Quality of service • Latency • Wireless devices • Call center consulting • Back-up • Staffing productivity

16. Summary • T-1/E1 • T3/E3 • Gigabit Ethernet • MPLS • IP VPNs • SIP trunking • Vulnerability to cable cuts and other outages • Security • Topology • Managed services