Cisco NM-HDV2-2T1/E1 - IP Communications High-Density Digital Voice NM with 2 T1/E1 Cisco Router Network Module Retail $129.00
Cisco NM-CEM-4TE1 - 4 Port T1/E1 Circuit Emulation over IP NM Cisco Router Network Module Retail $399.00
Cisco NM-HD-1V - One-slot IP Communications Voice/Fax Network Module Cisco Router Network Module Retail $199.00
