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© 2011 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 7 of 11
Table 10. DSP Resources: Scenario 2
UC 500
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
of G.711
Up to a
maximum of
24x8 or 48x4
Up to a
maximum of
24x8 or 12x16
or 6x32
●
1 DSP for supporting voice ports fractional
T1/E1 and Transcoding sessions
●
Remaining 3 DSPs used for Conferencing
0 session for 6 ch
1 session for 4 ch
2 sessions for 2 ch
1MFT
T1/E1
No. of Ch
≤ 6
G.729
Transcoding
sessions
recommended
Up to a
maximum of
4x8 or 8x4
Up to a
maximum of
4x8 or 2x16 or
1x32
●
1 DSP for supporting voice ports fractional
T1/E1 and Transcoding sessions
●
1 DSP reserved for transcoding
●
Remaining 2 DSPs used for Conferencing
8 session for 6 ch
9 session for 4 ch
10 sessions for 2 ch
No SIP Trunk
or G.711
Up to a
maximum of
16x8 or 32x4
Up to a
maximum of
16x8 or 8x16
or 4x32
●
2 DSP for supporting voice ports and
Transcoding sessions
●
Remaining 2 DSPs used for Conferencing
0 session for 22 ch
1 session for 20 ch
2 sessions for 18 ch
And so on…
1MFT
T1/E1
6 ≤ No. of
Ch ≤ 22
G.729
Transcoding
sessions
recommended
Up to a
maximum of
2x8 or 4x4
Up to a
maximum of
2x8 or 1x16
●
2 DSP for supporting voice ports and
Transcoding sessions
●
1 DSP reserved for transcoding
●
Remaining 1 DSPs used for Conferencing
8 session for 22 ch
9 session for 20 ch
10 sessions for 18 ch
And so on…
No SIP Trunk
or G.711
Up to a
maximum of
8x8 or 16x4
Up to a
maximum of
8x8 or 4x16 or
1x32
●
3 DSP for supporting voice ports and
Transcoding sessions
●
Remaining 1 DSPs used for Conferencing
A maximum of 7
Transcoding sessions,
disable Conferencing
for more transcoding
1MFT Full
T1
G.729
Transcoding
sessions
recommended
Up to a
maximum of
2x8 or 4x4
Up to a
maximum of
2x8 or 1x16
●
3 DSP for supporting voice ports and
Transcoding sessions
●
0 DSP reserved for transcoding
●
Remaining 1 DSPs used for Conferencing
A maximum of 7
Transcoding sessions,
disable Conferencing
for more transcoding
No SIP Trunk
or G.711
Up to a
maximum of
8x8 or 16x4
Up to a
maximum of
8x8 or 4x16 or
1x32
●
3 DSP for supporting voice ports and
Transcoding sessions
●
Remaining 1 DSPs used for Conferencing
A maximum of 4
Transcoding sessions,
disable Conferencing
for more transcoding
UC 540
1MFT Full
T1
G.729
Transcoding
sessions
recommended
Up to a
maximum of
2x8 or 4x4
Up to a
maximum of
2x8 or 1x16
●
3 DSP for supporting voice ports and
Transcoding sessions
●
0 DSP reserved for transcoding
●
Remaining 1 DSPs used for Conferencing
A maximum of 4
Transcoding sessions,
disable Conferencing
for more transcoding