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RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator’s Guide
Polycom®, Inc. 246
Information required that is not part of the dialing string:
[Destination number] - The destination number as alias, IPv4 address or ISDN/PSTN number of
participant B.
The dialing string format:
H.323 Participants connecting to another IP participant via a Gateway to Gateway call over an ISDN link
enter a dial string using the format:
<GW A Prefix in GK><Gateway Profile_ID on GW A>*<Destination ISDN Dial-in number
assigned to the Gateway Session Profile GW B>*<Destination Number, participant>
For example:
H.323 participant dials: 229999*4444103, and when prompted for the Destination number enters 3456
followed by the pound key (#) using DTMF codes
SIP Participants connecting to another IP participant via a Gateway to Gateway call over an ISDN link enter
a dial string using the format:
<Gateway Profile_ID on GW A>@<Central Signaling IP GW A>*<Destination ISDN
Dial-in number assigned to the Gateway Session Profile GW B>*<Destination
Number, participant>
For example:
If Central Signaling IP address of Gateway A is 172.22.177.89, SIP participant dials: 9999@
172.22.177.89* 4444103 and when prompted for the Destination number enters 3456 followed by the
pound key (#) using DTMF codes.
Gateway to MCU Calls via ISDN Cascading Link
When H.323 participants connects to a conference/Meeting Room via a Gateway to MCU call over an ISDN
link, the dialing string includes the following components:
The dialing string includes the following components:
[GW A prefix in GK] - The prefix with which Gateway A is registered to the gatekeeper.
[GW Profile ID on GW A] - The ID of the Gateway Profile on GW A to be used for routing the call to
the Meeting Room/conference running on MCU B.
[Conference/Meeting Room/Entry Queue ISDN/PSTN number] - The dial-in number assigned to
the Entry Queue/Meeting Room/Conference defined on MCU B, including the required country and area
codes.
GW A prefix in Gatekeeper - (not used with SIP) 22
Gateway Profile ID in GW A 9999
ISDN Dial-in Number assigned to the Gateway Session
Profile GW B
4444103
IP Participant Alias 3456