AudioCodes MP-204B User Manual download pdf (Page 4)

Configuring SIP

When the gateway receives a call from the PSTN it must know where to send that call. In the reverse

direction, the gateway must accept SIP calls from the UC server and direct those calls out to the PSTN.

This is generally configured by providing SIP and Dial Plan configuration information.

The UC server IP address or name within the enterprise domain is the SIP local domain for the gateway.

Standard UC server configurations for gateways do not require that the gateway register on the UC server

as a SIP identity.

Calls between PSTN devices and services on the UC server may make use of DTMF tones, for example,

voice mail and auto attendant functions. The DTMF digits must be transported outside the voice stream to

the UC server. This is done by enabling DTMF Transport using rfc2833.

Similarly, faxes that are sent or received by the UC server must be supported by transmitting the fax

information outside the TDM voice path. This is implemented using T.38 fax support. This must be

enabled on the gateway by doing the following.

1. Navigate to Quick Setup.

2. Leave Gateway Name blank.

3. Ensure that Working with Proxy is set to Yes.

4. In Proxy IP Address enter the IP address of the UC server.

5. Leave Proxy Name blank.

6. Select Reset and when prompted save the information.

See Figure 2 below.

Figure 2

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AudioCodes MP-204B User Manual Page 4