This page will soon be deactivated—explore our new, faster, mobile-friendly site, now centralized in MyWorkspace!

Connecting the world and beyond

  •  
Geneva Digital Week

ITU-T Recommendations

Search by number:
Others:
Skip Navigation Links
Content search
Advanced search
Provisional name
Equivalent number
Formal description
Study Groups tree viewExpand Study Groups tree view

ITU-T E.121 (07/1996)

عربي | 中文 | English | Español | Français | Русский
该建议书标题尚未译为中文。
本建议书的目的是要确定可以用来帮助用户识别可用的服务,然后使用这些服务的图形文字、符号和图标。对本建议书的修订包括与国际电工委员会(IEC)密切合作制定的新的符号和图形文字。
Citation: https://handle.itu.int/11.1002/1000/3415
Series title: E series: Overall network operation, telephone service, service operation and human factors
  E.100-E.229: International operation
  E.120-E.139: General provisions concerning users
Approval date: 1996-07-19
Approval process:TAP
Status: Superseded
Maintenance responsibility: ITU-T Study Group 21
Further details: Patent statement(s)