What is the difference? AIM-ATM AIM-ATM-VOICE-30 AIM-ATM-VOICE-30

The Cisco AIM-ATM, AIM-VOICE-30 and AIM-ATM-VOICE-30 are Voice/Fax and ATM AIM modules designed for the Cisco 2600, 2600XM, 2691, 3660 and 3700 series routers.  These routers are equipped with an Advanced Integration Module (AIM) Slot.

AIM-ATM : Provides asynchronous transfer mode (ATM) WAN services.

AIM-VOICE-30 : Provides digital signal processor (DSP) services and can support up to 30 medium-complexity or 16 high-complexity voice channels.

AIM-ATM-VOICE-30 - Combines the features of the AIM-ATM and AIM-VOICE-30 modules onto a single AIM module.

The AIM-ATM offers ATM adaptation layer 2 (AAL2) and ATM adaptation layer 5 (AAL5) support for low-density T1/E1 data and voice connections over ATM networks.

The AIM-VOICE-30 contains DSPs that can support up to 30 voice channels when used with VWIC-MFT interface cards.

The AIM-ATM-VOICE-30 combines the ATM features of the AIM-ATM and voice features of the AIM-VOICE-30 in a single AIM module.  The AIM-ATM-VOICE-30 also supports FR/HDLC/PPP ecapsulation and channelized voice on the same T1/E1 interface to PSTN.

Key Note:  Before the introduction of the AIM-VOICE-30, providing digital voice service required the NM-HDV and analog voice services required the NM-1V/2V or NM-HDA.  The AIM-VOICE-30, when used with a Voice/WAN interface card (VWIC-MFT), can provide digital voice service without using teh NM-HDV.  This frees a valuable network module slot for other applications.

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