# References

For more information about T3 and E3 interfaces, consult the following resources:

- RFC 1661—The Point-to-Point Protocol (PPP) (July 1994)
- RFC 2364—PPP over AAL5 (July 1998)
- RFC 2496—Definitions of Managed Objects for the DS3/E3 Interface Types (January 1999)
- RFC 2516—Method for Transmitting PPP over Ethernet (PPPoE) (February 1998)
- RFC 2684—Multiprotocol Encapsulation over ATM Adaptation Layer 5 (September 1999)
- ANSI T1.107a-1990 Standard for Telecommunications—Digital Hierarchy – Supplement to Formats Specification (August 1990)

For more information about bit error test (BERT) patterns, see:

- ITU O.151—Error performance measuring equipment operating at the primary rate and above (October 1992)
- ITU O.153—Basic parameters for the measurement of error performance at bit rates below the primary rate (October 1992)
- ANSI T1.404-1994 Standard for Telecommunications—Network-to-Customer – DS3 Metallic Interface Specification (1994)