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© 2011 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 7 of 12
Table 9. DSP Resources: Scenario 1
UC500
Model
Additional
Voice Card
(VIC)
SIP Trunk
Preferred
Codec
Ad-hoc
Conference
(Sessions x
Participants)
Meet-me
Conference
(Sessions x
Participants)
Comments Transcoding
No SIP Trunk
or G.711
Up to a maximum of
56x8 or 104x4
Up to a maximum of
48x8 or 24x16 or
12x32
●
1 DSP for supporting voice
ports and transcoding sessions
●
Remaining 7 DSPs used for
conferencing
A maximum of 3
transcoding
sessions for this
configuration
None
G.729
Transcoding
sessions
recommended
Up to a maximum of
12x8 or 24x4
Up to a maximum of
12x8 or 6x16 or
3x32
●
1 DSP for supporting voice
ports and transcoding sessions
●
1 DSP reserved for
transcoding
●
Remaining 6 DSPs used for
conferencing
A maximum of 11
transcoding
sessions for this
configuration
No SIP Trunk
or G.711
Up to a maximum of
56x8 or 104x4
Up to a maximum of
56x8 or 28x16 or
14x32
●
1 DSP for supporting voice
ports and transcoding sessions
●
Remaining 7 DSPs used for
conferencing
A maximum of 2
transcoding
sessions for this
configuration
2FXS
2FXS/DID
2FXO
G.729
Transcoding
sessions
recommended
Up to a maximum of
12x8 or 24x4
Up to a maximum of
12x8 or 6x16 or
3x32
●
1 DSP for supporting voice
ports and transcoding sessions
●
1 DSP reserved for
transcoding
●
Remaining 6 DSPs used for
conferencing
A maximum of 10
transcoding
sessions for this
configuration
No SIP Trunk
or G.711
Up to a maximum of
56x8 or 104x4
Up to a maximum of
56x8 or 28x16 or
14x32
●
1 DSP for supporting voice
ports and transcoding sessions
●
Remaining 7 DSPs used for
conferencing
A maximum of 1
transcoding
sessions for this
configuration
UC 560
4FXS
4FXS/DID
4FXO
2BRI NT/TE
G.729
Transcoding
sessions
recommended
Up to a maximum of
12x8 or 24x4
Up to a maximum of
12x8 or 6x16 or
3x32
●
1 DSP for supporting voice
ports and transcoding sessions
●
1 DSP reserved for
transcoding
●
Remaining 6 DSPs used for
conferencing
A maximum of 9
transcoding
sessions for this
configuration