Version 6.4 367 March 2012
SIP User's Manual 18. GW and IP to IP
18.9.2.1 Step 1: Enable the IP-to-IP Capabilities
This step describes how to enable the device's IP-to-IP application.
To enable IP-to-IP capabilities:
1. Open the Applications Enabling page (Configuration tab > VoIP menu >
Applications Enabling submenu > Applications Enabling).
2. From the 'Enable IP2IP Application' drop-down list, select Enable, as shown below:
Figure 18-49: Enabling the IP2IP Application
Note: For the IP-to-IP feature, the device must also be installed with the appropriate
Software Upgrade Feature Key.
18.9.2.2 Step 2: Configure the Number of Media Channels
The number of media channels represents the number of digital signaling processors
(DSP) channels that the device allocates to IP-to-IP calls. The remaining DSP channels
can be used for PSTN calls. Two IP media channels are used per IP-to-IP call. Therefore,
the maximum number of media channels that can be designated for IP-to-IP call routing is
120 (corresponding to 60 IP-to-IP calls).
To configure the number of media channels:
1. Open the IP Media Settings page (Configuration tab > VoIP menu > IP Media
submenu > IP Media Settings).
Figure 18-50: Defining Required Media Channels
2. In the 'Number of Media Channels' field, enter the required number of media channels
(in the example above, "120" to enable up to 60 IP-to-IP calls).
3. Click Submit.
4. Save the settings to flash memory ("burn") and reset the device (see 'Saving
Configuration' on page 482).
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