
Cisco Network Modules
Analog and ISDN Basic Rate Voice Network Modules continued
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 | Supported Platforms | 
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 | and Minimum Cisco | Comments | 
| Product | Description | IOS Versions | |
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 | Provides a  | 3800  | Requires voice interface | 
| voice/fax network module | 2811, 2821, and 2851– | card and voice feature set.. | |
| Enhanced Voice/Fax | with an integrated digital | 12..3(8)T4 | The  | 
| signal processor (DSP), | 
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| Network Module | 
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| enabling voice and fax | 
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 | are not supported on the | |
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 | traffic to be routed over | 
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 | data networks.. The user- | 
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 | configurable expansion | 
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 | slot accommodate the | 
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 | addition of up to four Cisco | 
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 | voice interface cards | 
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 | or voice/WAN interface | 
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 | cards.. The interface cards | 
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 | allow up to eight analog | 
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 | ports, four BRI ports, 24 | 
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 | medium complexity, or | 
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 | 48 G..711 digital T1/E1 | 
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 | voice channels.. Connects | 
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 | to standard telephony | 
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 | equipment such as PBXs, | 
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 | key systems, phones, and | 
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 | fax machines.. | 
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Modular Router Solutions
Voice and Fax Integration
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 | Cisco Network Modules | 
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| Analog and ISDN Basic Rate Voice Network Modules continued | |||
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 | Supported Platforms | 
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 | and Minimum Cisco | Comments | 
| Product | Description | IOS Versions | |
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 | With support for up to 24 | Extension Voice Module | Requires a Cisco IOS voice | 
| total voice and fax sessions, | (EVM) slot only: | feature set.. | |
| the Cisco  | 
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| Digital Extension Module | 
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| Extension Module is ideal for | 
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| for Voice and Fax | 
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 | networks with high analog | 
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| (foreign exchange station | Any Network Module Slot: | |
| [FXS], direct inward dialing | ||
| 3825 (1 per router)– | ||
| [DID], and foreign exchange | ||
| 12..3(11)T | ||
| office [FXO]) and digital | ||
| 3845 (1 or 2 per router)– | ||
| (Basic Rate Interface [BRI]) | ||
| 12..3(11)T | ||
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| Components: Baseboard | 
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| with eight ports that can be | 
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| configured individually for | 
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| FXS or DID signaling.. Add up | 
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| to two expansion modules in | 
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| any combination to increase | 
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| voice and fax session | 
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| capacity:  | 
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| 3FXS/4FXO.. Packet | 
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| voice DSP modules | 
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| (PVDM2s) are used in | 
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| combination with the Cisco | 
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| Module baseboard and | 
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| its expansion modules.. | 
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| PVDM2s are purchased | 
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| separately and installed in | 
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| the digital signal processor | 
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NM-HDA-4FXS 
This base board is always required for any configu- ration of 
3800 
2811, 2821, and 2851– 12..3(8)T4
Prior to Cisco IOS 12..3 Mainline, requires a Cisco IOS “Plus” feature set.. 12..3 Mainline and forward supported in IP Voice feature set..
No reliance on other network modules, WICs, voice interface cards, or advanced integration modules..
| (DSP) module slots located | 
| inside the Cisco 2821, Cisco | 
| 2851, Cisco 3825, and Cisco | 
| 3845 Integrated Services | 
| Routers.. | 
| Modular Router Solutions | 
| Voice and Fax Integration | 
supports 16 voice calls using 
Modular Router Solutions
Voice and Fax Integration
EM-4BRI-NT/TE 
Adds support for BRI (NT and TE) for use with the Cisco 
Modular Router Solutions
Voice and Fax Integration
3800 
Requires a Cisco high- density analog and digital extension module 
Requires voice feature set..
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