How communication servers transmit UCIDs depends on the sending and receiving equipment. The following table summarizes UCID transmission features.
Sender |
Receiver |
Connection |
UCID contained in |
Switch |
Switch |
ISDN (BRI or PRI) trunks using QSIG service protocol. |
Codeset 0 Facility IE as manufacturer specific information (MSI) IE. |
ISDN (BRI or PRI) trunks using Shared UUI service protocol. |
codeset 0 shared user-to-user information (UUI) IE. |
SIP trunks using Shared UUI service protocol. |
User-to-User header of an INVITE message. |
Switch |
IVR |
ASAI |
Various ASAI messages. |
IVR |
Switch |
ISDN-PRI |
Codeset 0 shared UUI IE. |
Switch |
CMS |
X.25 |
SETUP5 CMS message. |
Switch |
CTI adjunct |
ASAI |
Various ASAI messages. |
