Private Telecommunication Network (PTN); Signalling at the S-reference point; Generic feature key management protocol for the control of supplementary services
专用电信网（PTN）；在S参考点发送信号；用于控制补充业务的通用特征密钥管理协议

1993-06-01

Private Telecommunication Network (PTN); signalling at the S-reference point; generic feature key management protocol for the control of supplementary services; English version ETS 300240:1993
专用电信网（PTN）；在S参考点发送信号；用于控制补充业务的通用特征密钥管理协议；英文版ETS 300240:1993

1993-12-01

Private Telecommunication Network (PTN); Signalling at the S-reference point; Generic keypad protocol for the support of supplementary services
专用电信网（PTN）；在S参考点发送信号；支持补充业务的通用键盘协议

1992-12-01

PTN-Signalling at the S Reference Point - Generic Keypad Protocol for the Support of Supplementary Services (SSIG-KP), Second Edition
S参考点的PTN信令.支持补充业务的通用键盘协议（SSIG-KP） 第二版

1993-06-01

Private Telecommunication Network (PTN); signalling at the S-reference point; generic keypad protocol for the support of supplementary services; English version ETS 300190:1992
专用电信网（PTN）；在S参考点发送信号；支持补充业务的通用键盘协议；英文版ETS 300190:1992

1993-09-01