Genuine Cisco 16A ASYNC Network Module

Cisco Async 16A 16-Port Asynchronous Serial Network Module

CISCO PVDM2-32 32 Channel Packet Voice Fax DSP Module for 2600 2800 3700 3800

Cisco ASYNC-32A 32-Port Asynchronous Network Card - Free Shipping

Lot of 2 Cisco WAN Interface Cards (WIC-1B-U-V1&2)

NM-16AM Cisco 16-Port Analog Modem Network Module

Lot of (4) Cisco WIC-1DSU-56K - 1 PORT Modem 4-Wire 56/64k Interface Cards

GENUINE Cisco VIC2-2FXO 2-Port Voice Interface Card for Routers w-Hologram