In addition to broadband, there is a WSR-88D narrowband communications system. Narrowband communications data transfer and protocol varies. Analog circuits are used with either X.25 or TCP/IP protocols and are limited to 9.6 kbps effective data rates. Digital frame relay circuits use TCP/IP and are typically capable of 256 kbps. Direct network connections use TCP/IP and are capable of up to 10/100 Mbps. A combination of equipment is required to allow disparate service providers, protocols and data transfers. Replacement of X.25 is a work in progress, driven by equipment obsolescence, and the need for additional bandwidth.
WSR-88D communications infrastructure is becoming challenging as the number of network connections grows and the demand for flexibility grows. This paper will demonstrate how a proposed architecture will better support future communications changes and will improve reliability of service, as well.