Transcoding DSP Resources
Conferences
Hardware All Participants One or More
Module Use G.711 Participants Use
or Chassis DSP Configuration (a-law, mu-law) G.729 or G.729a
NM-HDV2 1 to 4 of: Sessions/PVDM2 Sessions/PVDM2
PVDM2-8 (1/2 DSP) 8 4
PVDM2-16 (1 DSP) 16 8
PVDM2-32 (2 DSPs) 32 16
PVDM2-48 (3 DSPs) 48 24
PVDM2-64 (4 DSPs) 64 32
NM-HD-1V Fixed at 1 DSP 16 sessions per NM 8 sessions per NM
NM-HD-2V Fixed at 1 DSP 16 sessions per NM 8 sessions per NM
NM-HD-2VE Fixed at 3 DSPs 48 sessions per NM 24 sessions per NM
NM-HDV 1 to 5 of PVDM-12 12, 24, 36, 48, or 60 12, 24, 36, 48, or 60
sessions per NM sessions per NM
NM-HDV-FARM (3 DSPs per PVDM-12)
1751 1 to 2 of: 2 sessions per DSP 2 sessions per DSP
PVDM-256K-4 (1 DSP) Maximum of 16 sessions Maximum of 16
per chassis sessions per chassis
PVDM-256K-8
(2 DSPs)
PVDM-256K-12
(3 DSPs)
PVDM-256K-16HD
(4 DSPs)
PVDM-256K-20HD
(5 DSPs)
1760 1 to 2 of: 2 sessions per DSP 2 sessions per DSP
PVDM-256K-4 Maximum of 20 Maximum of 20
(1 DSP) sessions per chassis sessions per chassis
PVDM-256K-8
(2 DSPs)
PVDM-256K-12
(3 DSPs)
PVDM-256K-16HD
(4 DSPs)
PVDM-256K-20HD
(5 DSPs)
WS-6608-T1 and Fixed at 64 of C549 24 sessions per port 24 sessions per port
WS-6608-E1 (8 DSPs per port)
WS-SVC-CMM- Fixed at 4 of 128 sessions per module 128 sessions per module
ACT Broadcom 1500
In addition to transcoding, DSPs can also be used as hardware MTPs. Table 2-12 shows
the various DSPs that can be used as MTPs and their performance.