Installation guide

Caller ID Standard Support for Analog Phones Telephone Planning and Ordering
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ShoreTel 14.2 Planning and Installation Guide 169
 DTMF signaling, even during power failure: The ShoreTel system uses DTMF tones for
signaling with telephones and trunks. It is mandatory that the telephone support DTMF signaling
even when power is interrupted, to allow users to make calls in emergency situations.
 Flash button: A Flash button is required on analog phone sets to activate call control features
from the telephone, including transfer, conference, pickup, and park. ShoreTel does not
recommend using the hook switch to simulate the Flash button, since this can lead to accidental
hang-ups.
If a speakerphone is required:
 Mute button: Users in the enterprise typically demand that their speakerphone have a mute
button. Since telephones are often designed with the residential market in mind, some
speakerphones do not have a mute button, which may lead to end-user complaints.
If message waiting is required (United States and Canada only):
 CLASS (FSK) message waiting indicator: CLASS message waiting–compatible telephones
provide a highly reliable method for turning message waiting lights on and off.
Telephones that rely on a stutter dial tone to control the message waiting light are unreliable and
should be avoided.
ShoreTel does not support telephones that use voltage-driven message-waiting lights.
Select telephones from a reputable manufacturer. Although most phones on the market have good
quality, we recommend that customers avoid “clone” or “low-end” phones.
Here are some additional considerations:
 Not too many buttons: Some telephones come with lots of complicated buttons and options that
drive up the price of the device. The ShoreTel system delivers advanced features through desktop
applications that are integrated with your enterprise tools. Telephones with lots of features and
buttons are not necessary.
 No answering machine: The ShoreTel system includes an integrated voice mail system for all
users at all sites. Telephones with integrated answering machines are not necessary.
 No hold button: Telephones with a hold button do not actually put the caller on system hold, so
the caller will not hear music on hold or have the correct call control status details.
Caller ID Standard Support for Analog Phones
Table 30 lists the caller ID standards the ShoreTel system supports for analog telephones by country.
Table 30: Caller ID Standard Support for Analog Phones by Country
Caller ID Standard Country
BELLCORE United States
BELLCORE Canada
BELLCORE Hong Kong