Specifications

CHAPTER
1
ShoreTel Mobility Router Administration Guide 1
1. ShoreTel Mobility Router
Architecture
The ShoreTel Mobility solution is designed to make it predictable and simple for Administrators to
create network transition points between Wi-Fi and Cellular where calls are expected to handover.
These transition points, called Route Points, are used by the ShoreTel Mobility Router to route calls
between the two networks. This architecture uses Radio Frequency (RF) information gathered from
various wireless elements within the enterprise and the carrier networks to create these Route Points.
The Mobility Router, a platform for mobile convergence, providing seamless location-based voice
handover as users roam between Wi-Fi and cellular networks, uses various metrics, such as voice
quality, signal strength, packet loss, jitter, Signal to Noise Ratio (SNR), and battery life to make
decisions on how calls are routed. When users are within the building, calls generally stay on Wi-Fi. As
users walk outside, the ShoreTel Mobility Client and the ShoreTel Mobility Router jointly make a routing
decision to provide seamless, zero-impact handover of an existing call. While within the building, the
solution preserves the native Access Point-to-Access Point (AP-to-AP) roaming behavior of the
Wireless Local Area Network (WLAN).
Figure 1 shows an example of the ShoreTel Mobility deployment topology. The Mobility Router
communicates with the enterprise IP-PBX over line-side and over trunk-side interfaces. You must
create an IP-PBX for each enterprise IP-PBX with which the Mobility Router communicates. The
Mobility Router uses line-side interfaces to register ShoreTel Mobility Clients to their respective IP-