Survivable Branch Appliance
AudioCodes Enhanced Media Gateway 104 Document #: LTRT-18206
5.1.6 Step 6: Configure Secure Real-Time Transport Protocol (SRTP)
5.1.7 Step 6-a: Configure the Gateway
for SRTP
To configure the Gateway for SRTP please refer to Section 4.5.
From the Media Security Behavior drop-down list, select:
“Mandatory” - if Mediation Server is configured to SRTP Required
”Preferable-Single media” - if Mediation Server is configured to SRTP Optional
5.1.8 Step 6-b: Configure IP Profile for Analog Device
As described in the introduction to this section, the ATA’s analog device uses the TCP/RTP
transport type, while the Mediation server uses TLS/SRTP for security settings.
Therefore, you must configure an IP Profile for the analog device (which will disable the SRTP
behavior in case the call should route to the ATA’s device). This IP Profile will be used later in the
Routing table.
¾ To configure the IP Profile settings:
1. Open the 'IP Profile Settings' page (Configuration tab > Protocol Configuration menu >
Coders And Profile Definition submenu > IP Profile Settings).
Figure 5-7: IP Group Table Page
2. From the ‘Profile ID’ drop-down list, select ‘1’ to indicate the number for the IP Profile.
3. From the ‘Fax Signaling Method’ drop-down list, select ‘G.711 Transport’
4. From the ‘Enable Early Media’ drop-down list, select ‘Enable’.
5. From the ‘Media Security Behavior’ drop-down list, select ‘Disable’ if the Analog Device is
configured to use RTP.
6. From the ‘First Tx DTMF Option’ drop-down list, select ‘RFC 2833’.
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