The Digital J1 Packet Voice Network Module provides a flexible and scalable J1 voice and fax solution for the Cisco 2600 and 3600 series multiservice Modular Access routers and supports up to 30 voice channels in a single network module. A single packet voice network module supports connections to Japanese Private Branch Exchanges (PBXs), and is compliant with the J1 TTC JJ20 standard. The network module eliminates the need to use expensive external third-party T1 to J1 converter products.