Cited in: RFC 3880
13 RFCs mentioned in the text of RFC 3880 (Call Processing Language (CPL): A Language for User Control of Internet Telephony Services)
| RFC | Title | Status | Date |
|---|---|---|---|
| 2119 | Key words for use in RFCs to Indicate Requirement Levels | Best Current Practice | March 1997 |
| 2141 | URN Syntax | Proposed Standard | May 1997 |
| 2445 | Internet Calendaring and Scheduling Core Object Specification (iCalendar) | Proposed Standard | November 1998 |
| 2483 | URI Resolution Services Necessary for URN Resolution | Experimental | January 1999 |
| 2648 | A URN Namespace for IETF Documents | Informational | August 1999 |
| 2824 | Call Processing Language Framework and Requirements | Informational | May 2000 |
| 3023 | XML Media Types | Proposed Standard | January 2001 |
| 3028 | Sieve: A Mail Filtering Language | Proposed Standard | January 2001 |
| 3066 | Tags for the Identification of Languages | Best Current Practice | January 2001 |
| 3261 | SIP: Session Initiation Protocol | Proposed Standard | July 2002 |
| 3508 | H.323 Uniform Resource Locator (URL) Scheme Registration | Informational | April 2003 |
| 3513 | Internet Protocol Version 6 (IPv6) Addressing Architecture | Proposed Standard | April 2003 |
| 3688 | The IETF XML Registry | Best Current Practice | January 2004 |