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AVPN LMC Training Courses Wireless WAN (WWAN) with AT&T Commercial Connectivity Service (CCS) I. Service Overview II. Service Components, standard and options I. Service Overview Wireless WAN (WWAN) with AT&T Commercial Connectivity Service (CCS) is a network-based option that extends the reach of the corporate network to mobile devices and workers with security enhanced back-end connectivity between the customer’s WAN and the AT&T Mobility network. WWAN is ideal for backup connectivity for bandwidths up to T1.5 and for primary connectivity where wired network connectivity is unavailable. CCS with network-based connectivity to AVPN or IPeFR allows customers to connect directly to AT&T MPLS solutions using customer or 3rd party managed routers. The example here depicts a Cisco router with an integrated 3G HWIC to provide cellular capabilities. A customer with older Cisco routers that cannot accept the 3G HWIC, may choose to go with a dual router configuration, using one of the devices from the WWAN portfolio. This allows the continued use of existing resources and eliminates the need for costly router upgrades. WWAN with CCS works by configuring the routers with a CCS Access Point Name (APN) which segregates traffic from other customer traffic. Traffic is then routed from the Cellular network to the customer AVPN or IPeFR network via a backend connection between the Mobility network and the MPLS networks. Traffic from multiple customer remote locations is aggregated into a single stream based on the APN. Traffic does not traverse the public Internet and IPSec from the remote device is not required as part of the solution. GRE Note: GRE tunnel with static IP is needed between CER and HQ Router if the CER is routing for multiple devices or subnets behind it. WWAN Benefits Direct Network-based connectivity to AVPN or IPeFR for 3rd party or customer managed routers 128 bit encryption (3G) or 64 Bit (EDGE) is inherent in the Mobility network Host site can initiate contact with remote devices Flexible IP addressing options (public, private, dynamic, static, customer or AT&T provided) WWAN Overview_MR081611_Customer.doc Page 1 of 3 Wireless WAN (WWAN) with AT&T Commercial Connectivity Service (CCS) II. Service Components, standard and options Wireless WAN (WWAN) with AT&T Commercial Connectivity Service (CCS) essentially serves as an insurance policy for customers who can’t afford downtime. Cellular data connectivity allows businesses to continue operating pretty much as usual while a primary WAN connection is down. One of the primary benefits of Cellular connectivity is that it provides true diversity to wireline solutions. If a customer uses ISDN or DSL, which are both wireline services, to backup a wireline WAN solution, they run the risk that both the primary and backup services could be taken down in the event of an outage. Cellular connectivity uses the airlink for the last mile making it less likely that an outage would impact both the primary and backup connections. Many routers can be configured for automatic failover and failback allowing for seamless transitions from the primary to backup connection when needed. Customer scenario: Customer has multiple sites that require uninterrupted data connectivity. To develop a Wireless WAN backup solution the following would be needed: A one time CCS Connection Set-up. a one time Custom APN Set-up and a Business Connect Data plan. At the remote locations the installation of a router with a wireless air card and SIM will be configured with the customer’s APN and static IP address (provided by customer). WWAN solutions can be implemented as Backup connectivity to WAN circuits or as Primary Low-bandwidth connectivity when wireline solutions are unavailable, will take too long to install, or are too expensive. The focus on backup rather than primary applications is due mainly to the fact that rate plans for WWAN connectivity are usage based or metered, rather than unlimited. Because of this, alternative transport technologies may be more cost effective for bandwidth intensive applications. Access Point Name (APN) Overview An Access Point Name (APN) is a virtual routing instance in the AT&T Mobility network that defines the path of GSM wireless data traffic to a specific end point. APNs perform a similar function to Permanent Virtual Connections in Layer 2 wireline data networks, to segment and isolate traffic. However, APNs also allow for aggregation of traffic into public or private user groups and are defined by deployment characteristics. Network Connectivity - CCS IP Enabled PVC Interconnect IP enabled PVCs are used to connect the AT&T Mobility data center to a customer’s existing AT&T VPN (AVPN) network or to a customer’s existing AT&T IP Enabled Frame Relay network. This connectivity is ordered and established by the AT&T Mobility sales team, and it is billed on the customer’s AT&T Mobility bill. Wireless Data (Business Connect) Rate Plans Associated with CCS WWAN Overview_MR081611_Customer.doc Page 2 of 3 Wireless WAN (WWAN) with AT&T Commercial Connectivity Service (CCS) CCS provides the infrastructure and connectivity needed for customers to extend their WAN to the cellular network. In order for a customer’s wireless devices to transmit data to the WAN, however, a wireless data rate plan is needed for each wireless device. The correct wireless data rate plan depends on the amount of data that each wireless device is expected to transmit, in addition to the type of deployment and application that the customer is supporting. Business Connect rate plans are usually paired with CCS deployments. These rate plans can be deployed for primary wireless applications, backup wireless applications, and telemetry wireless applications. WWAN Overview_MR081611_Customer.doc Page 3 of 3 .
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