Polycom 1500/1800/2000/4000 manual Dialing via Gateway IVR for Isdn Participants

Gateway Calls

DTMF tones and Caller-id are not passed end-to-end.

ISDN Participants

Two dialing methods are available to ISDN/PSTN participants:

●Dialing via Gateway IVR for ISDN Participants

●Direct Dial-in to Endpoints or DMA VMR using Automatically Generated Destination Numbers.

In addition, PSTN participants can dial the Gateway IVR and can use the MCU or DMA prefix in the gatekeeper together with the conference ID/endpoint alias as the destination string to simplify the input. This is one of the methods for PSTN participants to connect to a virtual Meeting Room on the DMA.

Dialing via Gateway IVR for ISDN Participants

In this flow, the calling endpoint enters the dialing string that includes the access number to the Collaboration Server Gateway Profile.

The endpoint connects to the Collaboration Server and is welcomed by the IVR Welcome slide and message: Please enter the destination number followed by the dial tone.

Using the endpoint’s DTMF input device such as remote control, the participant enters the number of the destination endpoint followed by the # key. Only one number can be dialed.

While the system dials to the destination endpoints, the participant hears the dialing rings. During the connection phase, the number being dialed is displayed on the screen of the calling endpoint.

If the call is not answered or it cannot be completed using one communication protocol, the system will try to connect the endpoint using the next communication protocol according to the selected protocols in the following order: H.323, SIP and ISDN.

PSTN numbers are identified separately and are dialed immediately without trying other connections. If the endpoint is busy, the system will not try to connect the endpoint using another protocol.

If the call is not completed after trying all possible protocols, the system displays the number that was dialed on the calling endpoint’s screen and the reason for not completing the call. For details, see Connection Indications.

Dialing from ISDN/PSTN Endpoints

Dialing String and Call Flow from ISDN Endpoint to IP Endpoint

Polycom®, Inc. 631