Cisco Cisco Catalyst 6000 Multilayer Switch Feature Card MSFC2 Information Guide
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Q.
What are the components that can be used on the NM-HDA?
A.
The following components can be used:
•
The base NM supports 4 FXS ports and two 5421 DSPs
•
There are two expansion module slots in the NM that can be used for combinations of:
–
8-port FXS expansion module
–
4-port FXO expansion module
•
There is also a DSP expansion module with an additional two DSPs.
Q.
When should the NM-HD-1V/2V be used vs. the NM-HDA?
A.
1) If current and anticipated needs are as follows, use the NM-HD-1V/2V:
–
Up to 8 FXS or FXO, or a mix of these up to 8 ports.
–
If any number of Analog-DID, E&M or BRI connectivity is required
–
If the FXO loop length (the length of wire between the FXO module and the central office) exceeds 8,000 ft
2) If the total number of FXS and/or FXO ports will exceed 8, then use the NM-HDA.
VOICE FEATURES
Q.
What voice features are supported by the NM-HDA?
A.
The following features are supported:
•
High and Medium complexity codecs—the same codec set as supported on the NM-HDV.
–
High complexity codecs include: G.711 a-law, G.711 u-law, G.726 32K, G.726 24K, G.726 16K, G.728, G.729, G.729A, G.729B,
G.729AB, G.723.1 5.3K, G.723.1 6.3K, G.723.1A 5.3K, G.723.1A 6.3K, clear-channel codec and fax-relay.
–
Medium complexity codecs include: G.711 a-law, G.711 u-law, G.726 32K, G.726 24K, G.726 16K, G.729A, G.729AB, clear-channel
codec and fax-relay.
•
Up to 8 FXO ports, by using both expansion slots for 2 4-port FXO modules
•
Up to 12 FXS ports, by using the 4 FXS ports on the base NM and one expansion slot for an 8-port FXS module
•
VoIP H.323, SIP and MGCP with Call Agent
•
VoIP MGCP and H.323 with CM
•
VoFR
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VoATM: VoAAL5 and Trunked VoAAL2
•
Caller ID Support
•
FXO Answer and Disconnect Supervision and battery reversal disconnect
•
FXO Power Failover
•
Voice feature parity with the NM-HDV and NM-1V/2V (such as VAD, echo cancellation, DTMF relay etc.)