Specifications

Planning and System Design

3 – 6 ShoreTel, Inc.

Option 4 Fill in the Trunks section of the spreadsheet shown in Figure 3-1 to

determine the number of trunks you need. The spreadsheet

automatically calculates the trunking ratio.

Consider Table 3-1 and the following:

• Larger locations can typically use lower-density trunking (15%).

• Smaller locations need higher-density trunking (50%).

• Some applications, such as call centers, can demand higher-density

trunking (50%).

NOTE When planning trunks, consider the call volume for your workgroups or ACD

groups. Since there is generally a queuing solution in place for ACD calls, the

number of trunks required should be based on the full utilization of the

expected number of agents and sufficient trunks for the expected number of

waiting callers.

Determine Number of ShoreGear Voice Switches

The ShoreTel 6.1 system is a software solution that runs on standard platforms across

the network equipment in your enterprise. There are five ShoreGear voice switches in

the hardware portfolio, significantly simplifying the selection, installation, and

maintenance of the ShoreTel 6.1 system compared to other systems available on the

market.

Each ShoreGear voice switch connects to your IP network using a 10/100M auto-

sensing Ethernet port:

• The ShoreGear-120/24 provides 8 universal telephone and trunk ports with 16

telephone ports. It also supports up to 120 IP phones. If you are installing ShoreTel

Conference Bridges, you need ShoreGear-120/24, ShoreGear-60/12, or ShoreGear-

40/8 switches with sufficient available IP ports to support the bridge(s).

• The ShoreGear-60/12 provides 12 universal telephone and trunk ports (8

universal telephone/trunk ports, 4 telephone ports), and up to 60 IP phones. If

you are installing ShoreTel Conference Bridges, you need ShoreGear-120/24,

ShoreGear-60/12, or ShoreGear-40/8 switches with sufficient available IP ports to

support the bridge(s).

• The ShoreGear-40/8 supports 8 analog ports (2 universal telephone/trunk ports, 2

loop-start trunk-only ports, and 4 telephone ports), or up to 40 IP phones. If you

are installing ShoreTel Conference Bridges, you need ShoreGear-40/8, ShoreGear-

60/12, or ShoreGear-120/24 switches with sufficient available IP ports to support

the bridge(s).

Table 3-1 Trunk Density

Trunk Density Trunks/Users %

Low 15%

Average 30%

High 50%

1. Note that one physical port must be reserved for every five SIP trunks that will be used.