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

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

Connections to Carriers’ Networks Legacy TDM TDM Voice PBX Internet Voice networkCustomer Premise Switch Carrier DACS

Connections to Carriers’ Networks VoIP to customer network Customer IP PBX Carrier IP Voice/Data network Customer Premise Switch

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

Overview of an MPLS Network Edge routers attach labels to customers’ packets MPLS Network High-speed core routers Edge routers connected directly to customers core routers connected only to other routers

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

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

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

T-1/T-3 Time Division Multiplexing 24 or 32 channels 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 Mux ……..24 Each device assigned a time slot What are the pros and cons of T-1/T-3 service?

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

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

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

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? AT&T equipment Cell tower Verizon equipment WiMAX tower

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

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