Datasheet

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Since this lowers the VPN performance of the router significantly, we recommend the use of the encryption AIM—especially if the encryption
policy requires the simultaneous use of AH and ESP. This limitation does not apply to the AIM-VPN/EPII-Plus or AIM-VPN/HPII-Plus.
VOICE SUPPORT
Q. What types of voice network modules, VICs, and WICs are supported on the Cisco 3800 Series?
A. For analog voice, the supported voice network modules are NM-HD-1V, NM-HD-2V, NM-HD-2VE and NM-HDA. The supported VICs
include: VIC2-2FXS, VIC2-2FXO, VIC2-2E/M, VIC-2-2BRI-NT/TE VIC-4FXS/DID, and the VIC2-4FXO. For digital voice, the supported
network module are the NM-HDV and the new NM-HDV2. A complete list of the supported voice modules can be found in Appendix A.
Q. Can any of the VICs or WICs installed in the three onboard WIC slots support voice?
A. Yes. The newer VIC2 modules are supported in any of the four onboard WIC/VIC/HWIC slots to support analog voice. Onboard PVDM2s
are required to terminate the voice call. For digital voice support, a T1/E1 VWIC is required in combination with the onboard PVDM2s.
Q. Are the AIM-VOICE-30 and AIM-ATM-VOICE-30 supported on the Cisco 3800 Series?
A. Neither of these AIMs is supported on the Cisco 3800 Series. Since the Cisco 3800 Series has integrated slots on the motherboard that support
up to four PVDM2s support for the voice AIMs is not required.
Q. What is the EVM-HD-8FXS/DID?
A. The EVM-HD-8FXS/DID is a new high-density analog voice module, which can be run with DSPs on the onboard PVDM2s. One EVM will
be supported on the Cisco 3825, and two will be supported on the Cisco 3845. The EVMs can be placed in any available network module slot.
Q. What is the maximum number of voice channels that can be supported on the Cisco 3800 Series?
A. The Cisco 3825 has two network module slots, which can accommodate two NM-HDVs, or four T1/E1s of packet voice. The Cisco 3845 has
four network module slots, which can accommodate four NM-HDVs, or eight T1/E1s of packet voice. The maximum number of voice channels
supported on the Cisco 3800 Series in Phase 1 is as follows:
• Cisco 3825: Up to 480 digital voice channels, 52 analog voice (FXS) channels
• Cisco 3845: Up to 720 digital voice channels, 88 analog voice (FXS) channels
Q. What voice encoding support is available with the onboard PVDM2s?
A. The Cisco 3800 Series has four onboard PVDM slots. Table 11 lists the codec capabilities and part numbers.
Table 11. PVDM Modules and Codec Capabilities
PVDM2 Module Description G.711 Channels Medium-Complexity Channels High-Complexity Channels
PVDM2-8 8-channel fax/voice DSP module 8 4 4
PVDM2-16 16-channel fax/voice DSP module 16 8 6
PVDM2-32 32-channel fax/voice DSP module 32 16 12
PVDM2-48 48-channel fax/voice DSP module 48 24 18
PVDM2-64 64-channel fax/voice DSP module 64 32 24
For more information on Cisco 3800 Series voice features and capabilities, review the Integrated Services Routers voice data sheet.