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Introduction
Cisco
Voice Network Modules provide enterprises,
managed service providers, and service providers
the ability to directly connect the public
switched telephone network (PSTN) and legacy
telephony equipment to existing Cisco 2600,
Cisco 3600, and Cisco 3700 routers. The NM-1V
and NM-2V carrier modules support Voice Interface
Cards (VICs) to provide this connectivity.
Note:
The NM-1V and NM-2V carrier modules do not
support WAN Interface Cards (WICs), which
are data-only interface cards. The "V"
in the product name indicates that these are
voice carrier modules. The WIC carrier module
product numbers are NM-1W and NM-2W.
Features
- Voice/fax
over IP
- Router-based,
modular design
- High-performance
digital signal processing (DSP) architecture
- Cisco
IOS® quality of service (QoS) features:
Resource Reservation Protocol (RSVP), weighted
fair queuing (WFQ), fragmentation, and interleave
- Compliant
with the H.323 standard for audio and videoconferencing
- Works
with existing phone and fax equipment
- Voice
features require a Cisco IOS Plus feature
set
Feature
support across the 2600, 3600, and 3700 VIC
NM-1V and NM-2V includes the following:
- Foreign
Exchange Office (FXO) answer supervision
- FXO
disconnect supervision
- Cisco
Echo Cancellation (ECAN)
- Connection
trunk
- Connection
private line, automatic ringdown (PLAR)
- Cisco
Hoot and Holler
- Cisco
Tool Command Language (TCL) Interactive
Voice Response (IVR) Version 2.0
- Transparent
Common Channel Signaling (T-CCS)
- Busyout
(local voice busyout [LVBO] and advanced
voice busyout [AVBO])
- Pulse
dialing
- Inbound
hookflash (Foreign Exchange Station [FXS])
- Outbound
hookflash (FXO)
- Caller
ID (FXS)
- Caller
ID (FXO)1
- Cisco
Fax Relay
- T.38
Fax Relay
- T.37
fax store and forward (S&F)
- Fax
passthrough
- Modem
passthrough
- Dual
tone multifrequency (DTMF) relay
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