PVDM2 support voice, transcoding and conference sessions. It also handles signaling in the case of analog and T1 cas voice ports.
Router-ADM-001#sh voice dsp group all
DSP groups on slot 0:
dsp 1:
DSP ID in the PVDM2 slot.
State: UP, firmware: 9.4.12
DSP state and firmware version.
Max signal/voice channel: 16/16
Maximum number of signaling / voice channels.
Max credits: 240
Each DSP has max. number of credits. When a DSP is allocated to a call certain number of credits are used.
num_of_sig_chnls_allocated: 14
Actual number of signaling channels allocated.
Transcoding channels allocated: 1
Actual number of transcoding channels allocated.
Group: FLEX_GROUP_VOICE, complexity: FLEX
Number of voice channels handled by DSP is flexible and depends on the codec of the call
Shared credits: 200, reserved credits: 0
200 credits are available for voice calls.
Signaling channels allocated: 11
Voice channels allocated: 0
Credits used: 0 Current number of credits used
Group: FLEX_GROUP_XCODE, complexity: HIGH
Supports G711 to G729 and G711 to G729b which are high complex xcode sessions.
Shared credits: 0, reserved credits: 40
40 credits are reserved for transcoding session
Transcoding channels allocated: 0
Credits used: 0
The following technology note provides details on codec complexity :
http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a00800b6710.shtml
Arun
