Cisco Cisco IOS Software Release 12.3(11)T
IP Communications Voice/Fax Network Module
How to Configure the IP Communications Voice/Fax Network Module
4
Cisco IOS Release 12.3(11)T2
Channel Availability for DSPs Based on Codecs
lists the number of channels available on each DSP for the codecs supported by the IP
Communications Voice/Fax Network Module feature.
How to Configure the
IP Communications Voice/Fax Network
Module
This section contains the following procedures:
•
•
•
Configuring the Voice Card for the Flex Option on the IP Communications
Voice/Fax Network Module
Voice/Fax Network Module
To enable the IP Communications Voice/Fax Network Module feature, perform this task to configure the
voice card for the flex option in codec complexity.
voice card for the flex option in codec complexity.
Table 2
Channels on DSP for Codecs Supported by the IP Communications Voice/Fax Network
Module
Module
Codec
Channels per DSP
High-Complexity Medium Complexity
Flex Complexity
G.711 (u-law, a-law)
6
8
16
1
1.
Applicable to the NM-HD-2VE only. The limitation on the number of calls is based on the network module, not the DSP (that
is, even though one DSP supports 16 channels, the NM-HD-2V supports only 8 G.711 calls due to the number of analog ports).
is, even though one DSP supports 16 channels, the NM-HD-2V supports only 8 G.711 calls due to the number of analog ports).
Fax/modem pass-through
6
8
16
Clear-channel codec
6
8
16
G.726 (32K, 24K, 16K)
6
8
8
GSMFR
6
8
8
Fax relay
6
8
8
G.729, G.729B, G.729A, G.729AB
6
8
8
G.728
6
Not supported
6
G.723.1 (5.3K, 6.3K)
6
Not supported
6
G.723.1A (5.3K, 6.3K)
6
Not supported
6
GSMEFR
6
Not supported
6