The MM342 media module provides a universal serial data WAN access port.

The MM342 media module supports the following WAN protocols:

• V.35/ RS449

• X.21

For these connections, the MM342 media module requires one of the following cables:

• Avaya Serial Cable DTE V.35 (Universal Serial Port to V.35)

• Avaya Serial Cable DTE X.21 (Universal Serial Port to X.21)