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Polycom CMA System Operations Guide
390 Polycom, Inc.
# Digits in Short Phone
Number
Enter the number of digits in the short form of the dialing
number.
• For example, in the United States, internal
extensions are usually four or five digits.
• This number indicates what part of the dial string is
sent to the gatekeeper for address resolution in
gateway + extension dialing.
ISDN Number Range -
Start
The starting ISDN number to assign automatically to IP
devices.
ISDN Number Range -
End
The ending ISDN number to assign automatically to IP
devices.
ISDN Number Assignment—
Assignment Method = Gateway Extension Dialing
Gateway Phone
Number
Phone number of the site gateway.
E164 Start • The starting number in a range of available
extensions to assign automatically to IP devices.
• When a device without native ISDN registers, a
number within the start and end range is assigned,
so that the device can be called through an ISDN
line.
E164 End The ending number in the range of available extensions
to assign automatically to IP devices.
Routing/Bandwidth
Internet calls are not
allowed
Disables call routing through the Internet.
Allowed via H.323
aware firewall
Enables call routing through the Internet, using an
H.323-aware firewall.
Notes
• For an outbound call to the Internet, you must enter
the firewall gateway service (e.g. a Polycom VBP
appliance) code before the IP address in the dial
string.
• If you select Allowed via H.323 aware firewall you
must create a site link between this site and the
Internet/VPN site.
Field Description