You are here: CSP Developer’s Guide: Internet Protocol > 9 H.323 Software > Hardware Requirements
The following hardware is required to implement the H.323 Gateway feature and supporting software applications in the CSP.
• Matrix Controller Series 3 card (also referred to as the Matrix Controller card)
• IP Signaling Series 3 card
• Chassis - Excel 2040, 2090 or 2110
• IP Network Interface Series 2 card or VDAC-ONE card for RTP streaming
• DSP-2 card or DSP-ONE card for DTMF tone detection and generation on the PSTN.