Cisco Cisco IOS XE 3.13S

• The call failure retry (rotary) feature on the Cisco IOS IP-to-IP gateway.

Table 1: Supported Gateways, Network Modules, and Codecs for Voice Security Features, on page 3

lists supported gateways,

network modules, and codecs for voice security features.

• G.711 mu-law

• G.711 a-law

• G.729

• G.729A

• AIM-VOICE

• AIM-ATM-VOICE-30

• EVM-HD

• NM-HDA

• NM-HDV

• NM-HDV2

• NM-HDV2-1T1/E1

• NM-HDV2-2T1/E1

• NM-HD-1V

• NM-HD-2V

• NM-HD-2VE

• PVDM2

• Cisco 2600XM

• Cisco 2691

• Cisco 2811

• Cisco 2821

• Cisco 2851

• Cisco 3725

• Cisco 3745

• Cisco 3825

• Cisco 3845

• Cisco VG224

• Cisco IAD 2430

To configure the Media and Signaling Authentication and Encryption Feature for Cisco IOS H.323 Gateways feature, you should
understand the following concepts:

• Provides privacy and confidentiality for voice calls

• Protects against voice security violations

• Facilitates the replacement of traditional time-division multiplexing (TDM) telephony systems with IP systems