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Polycom CMA System Setup Overview
Polycom, Inc. 389
# of Digits in Subscriber
Number
The number of digits in a phone number. For example,
in the United States, subscriber numbers may have
seven digits or ten digits depending upon the region.
Default LCR Table The default least-cost routing table (LCR) for this site.
This LCR table is used for all calls originating from
devices associated with this site. The default is None.
Assignment Method The ISDN number assignment method for the site.
Possible values include:
• No Auto Assignment. Select this option when
ISDN numbers are not assigned to IP devices.
• DID (Direct Inward Dial). Select this option when
you assign a range of phone numbers received from
the telephone company service.
• Gateway Extension Dialing. Select this option
when you have a single gateway phone number and
a range of extensions (E.164 aliases) that are
internal to the company. In this case, calls go
through a gateway. Endpoints are differentiated by
the extension at the end of the dial string.
When a site is assigned an automatic assignment
method, devices without an ISDN number are assigned
one when they register. These numbers allow inbound
calls to reach specific video endpoints. After an ISDN
number is assigned to an endpoint, it is reserved for use
as long as that endpoint remains registered with the
CMA system.
Note
If you do not assign ISDN numbers automatically, you
cannot call IP-only endpoints through an ISDN line.
Territory Assigns the site to a territory, and thus to a CMA
system.
Location Specify the geographic location of the site either by
longitude+latitude or country+city.
ISDN Number Assignment—
Assignment Method = DID (Direct Inward Dial)
# Digits in Call Line
Identifier
Enter the number of digits in the Call Line Identifier
(CLID), which is the dialed number. The maximum is 17.
• For example, in the United States, the number of
digits in the CLID is often 7 for outside local calls, 4
for internal calls, or 11 for callers in a different area
code.
• This number indicates what part of the full dial string
is sent to the gatekeeper for address resolution.
Field Description