Specifications

Legacy Integration
14 – 4 ShoreTel, Inc.
through 52999, while users at the second location would be assigned extensions 32500
through 32799.
NOTE The extensions on all systems that are integrated together should be configured
to be the same length.
Be sure to document the planned integrated dialing plan prior to configuring the
systems to streamline the configuration process. Information to take note of is provided
in the following template:
PSTN Services
The number of trunks, your integration plan, and the overall system design includes
the provisioning of services across the network. PSTN services can be provided at both
systems in the integration or consolidated together.
Multi-Site Integration
When the systems are located at different sites, both systems should have local
trunking for both inbound and outbound calls. Local inbound numbers make it easy
for nearby customers to reach you, while local outbound calls allow you to save on
telephone charges by using local services at the site.
In this configuration, the trunk lines connecting the systems are used for the inter-site
calling between extensions or applications on the two systems. The interfaces on the
two systems are configured to dial out to the remote or off system extensions, and to
accept incoming calls using DNIS.
The ShoreGear-T1 voice switch that connects to the legacy PBX should be located at
the site with the legacy PBX. This leverages the IP network to extend the calls to the
other sites with the ShoreTel 6.1 system.
Single Site Integration
When the systems are located at the same site, it is not required that both systems be
connected to the PSTN. The systems can be configured to best match your
requirements.
In a single site configuration, the PSTN connections for inbound calls can be connected
to each system. In this environment, the trunks connecting the two systems are
configured to dial out the remote or off system extensions and to accept incoming calls
using DNIS.
System One System Two
Location
DID Range
Local Extensions
(Prefix + Number)
Remote Extensions
(Prefix + Number)