You are here: CSP Developer’s Guide: Internet Protocol > 1 Introduction to Converged Services Platform > VDAC-ONE and IP Network Interface Series 2 Cards

VDAC-ONE and IP Network Interface Series 2 Cards

VDAC-ONE Card

The VDAC-ONE (Voice-Data Access Concentrator) card performs two-way conversion between circuit-switched data and packet-switched Ethernet data. This conversion is required by packetized voice applications such as the Voice over Internet Protocol (VoIP). The card also integrates media resources over IP technology.

The VDAC-ONE card converts circuit-switched voice to IP packets, employing compression algorithms that can increase capacity toward the IP network side. You can have parameters modified for an individual call, often while the call is active, changing the quality of service, as needed. Refer to the Basic Configuration section for more information.

For more information refer to the VDAC-ONE Card Chapter.

IP Network Interface Series 2 Card

IP Network Interface Series 2 card is the second generation VoIP line card used in the CSP. In the broadest sense, IP Network Interface Series 2 card is conceptually a VDAC-ONE card with higher channel densities. A major requirement for IP Network Interface Series 2 card is to provide an easy migration path for VDAC-ONE users with minimal host impact.

For more information refer to the chapter IP Network Interface Series 2 Card.

Similarities and Differences

Refer to the following sections for similarities and differences with the VDAC-ONE and IP Network Interface Series 2 cards.

Differences Between IP Network Interface Series 2 and VDAC-ONE Cards

VoIP Attributes

Voice Data Access Concentrator Card. Performs two-way conversion between circuit-switched data and packet-switched Ethernet data required by packetized voice applications such as VoIP.
The protocol used in most local area PC networks. Typically, most Ethernet networks support data transmission speeds up to 10 Mbps, but 100 Mbps is also possible.
Voice over Internet Protocol. The delivery of voice information in digital form in discrete packets rather than in the traditional circuit-committed protocols of the public-switched telephone network (PSTN).
Internet Protocol. Part of the TCP/IP family of protocols used to route messages and tracks the addresses of nodes.