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Appendix D – BRI Supplemental Services
443
Table 60. ETSI Specification Cross-Reference for Supplemental
Services
Supplementary Service/Description ETS 300
Specification
Explicit Call Transfer - enables a user (user A) to transform
two of that user's calls (an active call and a held call), each
of which can be an incoming call or an outgoing call, into a
new call between user B and user C. “Call Transferred
Alerting” and “Call Transferred Active” messages are
returned by the network to the user.
367/369/369
Call Hold/ Retrieve - allows a user to interrupt
communications on an existing call and then subsequently,
if desired, re-establish communications. When on Hold, the
user may retrieve that call from hold, originate a new call,
retrieve another call, or establish connection to an incoming
call, for example, a waiting call.
139/140/141
Subaddressing (allows direct connection to individual
extensions or devices sharing the same phone number, or, as
a proprietary messaging mechanism). Provides additional
addressing above the ISDN number of the called user.
059/060/061
Called/Calling Party Identification (CLIP) - Provides the
calling user’s ISDN number and subaddress information to
the called user. This information is sent in the “Setup
message” (see ETS300 102-1) by the calling user to the
switch, and from the switch to the called user.
089/091/092
Called/Calling Party Identification (CLIR) - Restricts
presentation of the calling user’s ISDN number to the called
user.
090/091/093
Called/Calling Party Identification (COLP) - Provides the
calling user’s ISDN number to the called user.
094/096/097
Called/Calling Party Identification (COLR) - restricts the
ISDN and the subaddress of the called user.
095/096/098
Advice of Charge - S 178/181/182
Advice of Charge - D 179/181/182