Filter
Top Products
Site Topology
Polycom, Inc. 283
ISDN Number Assignment
Assignment method The ISDN number assignment method for the devices in this site. The
numbers being assigned are endpoint aliases in the form of E.164 numbers,
which can be dialed by both IP endpoints registered to the Call Server and
ISDN endpoints dialing in through an ISDN gateway.
The assignment options are:
• No assignment. Select this option when you don’t want to define a range
of E.164 aliases for the site.
• Manual assignment. Select this option to define a range (or ranges) of
E.164 aliases for the site, but not automatically assign those aliases to
endpoints.
• Automatic assignment. Select this option to define a range (or ranges) of
E.164 aliases for the site and automatically assign those aliases to
endpoints that register without an alias.
After an E.164 alias is assigned to an endpoint, it’s reserved for use as
long as that endpoint remains registered with the Polycom
RealPresence DMA system.
If you decide not to enable Automatic assignment, you can always manually
add E.164 aliases to endpoints from the Endpoints page (see Edit Device
Dialog Box on page 97). And endpoints will have any aliases with which they
register.
Dialing method The ISDN inward dialing method for the site:
• DID (Direct Inward Dial). Select this option if your ISDN gateway is
provisioned with a range of phone numbers from the ISDN service provider,
and each of these numbers will be assigned to an endpoint as an alias.
• Gateway Extension Dialing. Select this option if your ISDN gateway’s
ISDN connection is provisioned with a single gateway phone number from
the ISDN service provider, and endpoints will be assigned an extension
(E.164 alias) that’s internal to the company and doesn’t correspond to any
number that can be dialed on the PSTN.
Endpoints can be dialed from the PSTN by dialing the ISDN gateway
phone number, followed by a delimiter (usually a #) and the extension
number. The gateway receives the full number from the PSTN and
dials only the extension number on the IP network.
ISDN Outbound Dialing
Override ITU dialing rules Check this box to override the standard dialing rules, established by the
International Telecommunications Union, when dialing out using an ISDN
gateway.
The default setting, which does not override ITU dialing rules, is usually
accurate for placing outbound calls. Enable this setting if you find that ISDN
gateway calls from registered endpoints in this site are unsuccessful.
PBX access code The code needed to access the ISDN/PSTN network through the site’s PBX
when dialing out.
Field Description