As far as I know any signaling protocol you can get on a Channelized Voice T-1 you can also get on analog lines. In fact these signaling protocols originated on analog lines and are simply emulated on voice T-1s. Notice I said Channelized Voice T-1, not ISDN PRI.

Granted, analog lines with signaling other than Loop Start don't seem to be popular as they once were. One of my clients has 4 analog E&M Wink lines going into their PBX (in addition to other loop start lines)

Alex Robar wrote:
Thanks Eric, I didn't know that. The general answer I've always seen
regarding analog lines was that they supported CID only, and never sent DID.
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