# Connecting to IP Media Server

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Descriptions

IP media server is the name given to the computing component that processes the audio streams associated with telephone calls or connections. Multi-party call and conference services are particular examples of how IP media servers can be used, as a special 'engine' is needed to mix audio streams together so that conference participants can hear all of the other participants.

Implementation

| Configure MRFC Parameters

1.Go to EMS >Configuration >NSS >MRFC.

2.Click the button at the upper right corner.

1.On the MRFP tab, and then click New at the bottom of the MRFP table.

2.In the MRFP ID box, select an available number for the new MRFP, and then click the button.

3.In the MRFP Option window, configure the relevant parameters given in the following table.

4.Click the button to update parameters to application servers.

5.Click the button to activate the new created MRFP.

Sub-parameter | Description (Click highlight SAVE after change) | Recommended Value
Title | Assign a catchy alias to this new created entity. | --
MRFC Domain | Specify a domain name for local server. | 172.18.98.1
MRFP Domain | Enter the domain name of the IPmedia media server. | 172.18.230.1
MRFP IP | Enter the IP address of the IPmedia media server. | 172.18.230.1
MRFP Port | Enter the SIP UDP Local Port set on the IPmedia media server. | 5060
Conf Prefix | Enter the conference ID set on the IP media server. | conf
Max Conf Channels | Assign the maximum number of channels reserved for conference use. It cooperates with the next parameter to distribute licensed channels between conference and transcoding. | --
Max Trans Channels | Assign the maximum number of channels reserved for transcoding use. It cooperates with the upper parameter to distribute licensed channels between conference and transcoding. | --

| Configure AudioCodes IPmedia Parameters

1.Go to IPmedia >Protocol Management >IPmedia Parameters.

2.Configure the necessary parameters given in the following table.

Sub-parameter | Description | Recommended Value
Conference ID | Identification of conference call (to be used by SIP INVITE) | conf
Bip On Conference | Beep when a new participant joins a conference | Enable
Enable DTMF Clamping | Enable or disable remove detected DTMF digits from the audio stream on simple conference participant | Enable
Enable Conference DTMF Reporting | Enable or disable report in out of band format about detected DTMF digits | Disable

3.Go to IPmedia >Protocol Management >Advanced Parameters >General Parameters.

4.Configure the necessary parameter given in the following table.

Sub-parameter | Description | Recommended Value
Disconnect on Broken Connection | Disconnect calls on receiving RTP broken notification | No

5.Go to IPmedia >Protocol Management >Protocol Definition >General Parameters.

6.Configure the necessary parameters given in the following table.

Sub-parameter | Description | Recommended Value
SIP Transport Type | Specify SIP transport type | UDP
SIP UDP Local Port | Specify local SIP port used for signaling | 5060

7.Go to IPmedia >Protocol Management >Protocol Definition >Coders.

8.Configure the necessary parameters given in the following table.

Coder Name | Packetization Time | Rate | Payload Type | Silence Suppression
G.729 | 20 | 8 | -- | Disabled
G.711A-law | 20 | 64 | -- | Disabled
G.711U-law | 20 | 64 | -- | Disabled
GSM EFR | 20 | 12.2 | 84 | Disabled
AMR | 20 | 12.2 | 64 | Disabled

See Also

• Multi-party Call

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