Specifications

System Overview

2 – 6 ShoreTel, Inc.

The feature allows an administrator to configure the system so there can be failover of

phones from one switch to another in the case of a switch failure. The feature is not

intended to provide failover for network outages (i.e. or lost connectivity between the

headquarters server and a remote site)

. Some network outage scenarios may be

handled by the ShoreTel failover solution.

Failover will occur on a phone by phone basis and will be driven by receiving RSIP

from the phone. IPCS will not move phones other than the one sending RSIP. Each

phone must initiate its own failover.

For configuration details, see the ShoreTel 6 Administration Guide.

Public Switched Telephone Network (PSTN) Failover

User extensions can be optionally configured to route extension-to extension calls to

the public switched telephone network (PSTN) in the event that an IP connection is

unavailable. Extension-to-extension calls are those a user makes to another site within

a multi-site system, for example, a user in New York calling a co-worker at the

company’s San Francisco office. The IP connection may be unavailable due to lack of

bandwidth or connectivity.

The PSTN failover option must be explicitly enabled for each user and bypasses the

caller’s call permissions. For configuration details, see the ShoreTel 6 Administration

Guide.

NOTE For systems using Distributed Routing Service (DRS), PSTN failover for

outbound calls will not function when the local switches loses connectivity to a

DRS server. When a site does not have connectivity to DRS, users at other sites

with DRS connectivity will be able to reach the users at that site using PSTN

failover (as long as the destination site has trunks to accept the PSTN calls). This

limitation has the biggest impact for small offices that do not have a local

ShoreWare server.

Distributed CDR

In the event of a WAN outage, CDR data is stored for up to two hours on the

distributed server. When WAN connectivity is restored, the stored data is forwarded to

the Headquarters database. After two hours, the distributed server deletes the data and

logs an error to the NT event log.

1. You should verify that you have sufficient hardware to meet the failover needs of your

particular environment.