# Port density examples for CG boards

This topic presents the following test case scenarios for running NaturalConference on CG boards:

- PSTN based cases

- IP based cases

## PSTN based conferencing test cases

The following CG board port density examples assume:

- IVR ports: call progress, DTMF detect, play and record with most encoding formats, or fax

- NaturalConference ports: echo cancellation with 10 ms echo tail, 200 ms convergence time, DTMF clamping, no coaching)

You can run eight IVR ports per DSP.

Board name | IVR ports | NaturalConference ports
--- | --- | ---
CG 6060/32 | 120 IVR ports - 4 T1/E1 trunks | 128 NaturalConference ports with echo cancellation and DTMF clamping
CG 6060C/32 | 120 IVR ports - 4 T1/E1 trunks | 128 NaturalConference ports with echo cancellation and DTMF clamping
CG 6565/64 | 240 IVR ports - 8 T1/E1 trunks | 256 NaturalConference ports with echo cancellation and DTMF clamping
CG 6565C/128 | 480 IVR ports - 16 T1/E1 trunks | 512 NaturalConference ports with echo cancellation and DTMF clamping

## IP based conferencing test cases

The following table presents the CG board capacities for the specified IP based conferencing test cases:

| Test case
Board name | Three party IP conferencing with G.711 | Three party IP conferencing with G.711 and G.729A
CG 6060/32 | 120 | 128
CG 6060C/32 | 120 | 128
CG 6565/64 | 240 | 128
CG 6565C/128 | 360 | 256

The test cases represent typical three party IP conferencing use scenarios. Each IP port for these test cases consists of a conferencing seat and a Fusion port:

Test case | Description
Three party IP conferencing with G.711 | All parties are established in the conference as eligible talkers. Each conferencing seat: Full duplex G.711 (TDM) Automatic gain control (AGC) enabled Each Fusion port: Full duplex G.711 with 20 ms packets, detection of VAD and DTMF enabled, and silence suppression disabled to present a worst-case scenario.
Three party IP conferencing with G.711 and G.729A | All parties are established in the conference as eligible talkers. Each conferencing seat: Full duplex G.711 (TDM) Automatic gain control (AGC) enabled Each Fusion port: Full duplex G.711 or G.729A with 20 ms packets, detection of VAD and DTMF enabled, and silence suppression disabled to present a worst-case scenario.