Product UPC: 098377851912 Cisco Clear Channel - Expansion module - MLPPP, FRF.16 - 4 ports - T-1/E-1 - for Cisco 2821 4-pair, 28XX, 28XX V3PN, 29XX, 38XX, 38XX V3PN, 39XX
30 Day Warranty Included. Extended warranty is available. Contact your sales rep for more information.