# Port density examples for AG boards

This topic presents examples of port densities that can be achieved when configuring AG boards for developing voice, fax, and conference applications:

The following AG board port density examples assume:

- IVR requires:

Capabilities | MIPS | DSP modules
--- | --- | ---
Echo cancellation (16 ms window length, 400 ms adapt time) | 3.63 | echo.m54
DTMF and silence detector | 1.94 | dtmf.m54
Call progress | 1.06 (AG 2000 only) | callp.m54
Precise tone filter (2 single frequency or 1 tone pair) | 1.25 | ptf.m54
NMS record 32 Kbit/s | 3.38 | voice.m54
| Total: 11.26 MIPS per channel |

For a 100 MIPS device (90 MIPS effectively), the required number of IVR channels is eight (90 divided by 11.26 and rounded to the nearest whole number).

- Fax could be used either in reception or transmission in V17, V27, or V29, requiring eight channels per DSP.

- NaturalConference can support 16 members per DSP with all capabilities activated (10 ms echo cancellation window length).

The following table provides AG board port density examples:

Board name | Channels | NaturalConference ports
--- | --- | ---
AG 2000/200-8L AG 2000C/200-8L AG 2000-BRI/200-8L | 8 IVR channels | 16 ports of NaturalConference with echo cancellation , DTMF clamping , and tone clamping .
AG 2000/200-8L AG 2000C/200-8L AG 2000-BRI/200-8L | None (when using a dedicated conferencing resource board.) | 48 to 92 ports of NaturalConference.
AG 2000/400-8L AG 2000C/400-8L AG 2000-BRI/400-8L | 8 IVR channels and 8 FAX channels | 32 ports of NaturalConference with echo cancellation, DTMF clamping, and tone clamping.
AG 2000/400-8L AG 2000C/400-8L AG 2000-BRI/400-8L | None (when using a dedicated conferencing resource board.) | 48 to 96 ports of NaturalConference. (Due to memory limitations of the coprocessor program of the AG 2000/C and AG 2000-BRI boards.)