Polycom 1500/1800/2000/4000 manual Gateway to MCU Calls via Isdn Cascading Link, For example

Defining Cascading Conferences

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:

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	4444103
Profile GW B
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:

<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:

[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.

Information required that is not part of the dialing string:

[Destination Conference ID] - Only if using the Entry Queue on MCU B for routing calls or creating new ad hoc conferences. The ID of the destination conference on MCU B.

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