Hello,
Supported signaling protocols with an E1 are:
4ESS
5ESS
DMS100
DNPSS
NET5
NI(includes NI-2)
NTT
QSIG
This, Outbound CLI, sounds like Outbound Caller ID. I'm not sure if this refers to the name or number. We can control the caller ID number, and they will be responsbile for the caller ID name.
DDI Digit Presentation, is how many digits they present to us on a call on the called number. We can support variable DDI lengths, usually it is best for management purposes to just have them send the full DDI.
Hope this helps.
Thanks,
-john