ETSI
Representing members from 54 countries, ETSI promotes worldwide standardization in telecommunications, broadcasting and information technology. The work of ETSI is closely aligned with the market needs of network operators, manufacturers, service providers, research institutions, and end users.
ETSI ETS 300 138-2
Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; Digital S
$13.00 $25.50
ETSI ETS 300 138-3
Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; Digital S
$9.00 $17.50
ETSI ETS 300 138-4
Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; Digital S
$58.00 $115.50
ETSI ETS 300 138-5
Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; Digital S
$15.00 $29.50
ETSI ETS 300 138-6
Integrated Services Digital Network (ISDN); Closed User Group (CUG) supplementary service; Digital S
$66.00 $131.00
ETSI ETS 300 139
Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Service descript
$11.00 $21.51
ETSI ETS 300 140
Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Functional capab
$15.00 $29.50
ETSI ETS 300 141-1
Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscrib
$13.00 $25.50
ETSI ETS 300 141-1/C1
Corrigendum to - Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service;
$48.00 $95.00
ETSI ETS 300 141-1/C2
Corrigendum to - Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service;
$26.00 $52.00
ETSI ETS 300 141-2
Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscrib
$13.00 $25.50
ETSI ETS 300 141-3
Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscrib
$13.00 $25.50
ETSI ETS 300 141-4
Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscrib
$75.00 $150.50
ETSI ETS 300 141-5
Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscrib
$11.00 $21.51
ETSI ETS 300 141-6
Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscrib
$56.00 $111.50