RMX 2000 Administrator's Guide Version 7.6.1 - Polycom

Gateway to Gateway Calls via ISDN Cascading Link
Chapter 4-Cascading Conferences
When H.323 participants connects to another IP participants via a Gateway to Gateway call
over an ISDN link, the dialing string includes the following components:
[GW A prefix in GK] - the prefix with which the RMX (gateway) is registered to the
gatekeeper.
[GW Profile ID] - The ID of the Gateway Profile defined on Gateway A to be used for
routing the call to the Gateway B.
[GW Profile ISDN/PSTN number] - the dial-in number assigned to the Gateway Profile
defined on Gateway B, including the required country and area codes.
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:
**
For example:
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
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:
@**
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.
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