The VoIP card is a coprocessing card and software package that adds VoIP capabilities to the AS5300 Access Server. The VoIP capability enables a Cisco router to carry live voice traffic (for example, telephone calls and faxes) over an IP network. The VoIP card contains multiple digital signal processor (DSP) modules. It uses the Cisco AS5300s Quad T1/E1 Public Switched Telephone Network (PSTN) interface and local-area network (LAN) or wide-area network (WAN) routing capabilities to provide up to a 48/60 channel gateway for VoIP packetized voice traffic to/from T1/E1 time-division multiplexing (TDM) traffic. Major applications of the VoIP cards include toll bypass, remote PBX presence over WANs, unified voice/data trunking, and POTS-Internet telephony gateways.