Q.921: ISDN user-network interface - Data link layer specification

Publisher

ITU-T

URL

https://www.itu.int/rec/T-REC-Q.921

Published

2000-06-01

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

ITU-T; recommendation text free to download under ITU terms; no-redistribution; short excerpts and locators only

Source notes citing this source

• ITU-T Q.921 is the ISDN user-network interface data link layer specification; its in-force components are the 09/97 version and Amendment 1 (06/00). in context

Cite this source record

APA

WarmTransfer. (2000, June 1). Q.921: ISDN user-network interface - Data link layer specification. WarmTransfer. https://warmtransfer.net/knowledge/sources/itu-t-q921

BibTeX

@misc{warmtransfer-itu-t-q921,
  title  = {Q.921: ISDN user-network interface - Data link layer specification},
  author = {{WarmTransfer}},
  year   = {2000},
  url    = {https://warmtransfer.net/knowledge/sources/itu-t-q921},
  note   = {ITU-T, accessed 2026-09-24}
}