The IDS needs D4, AMI, Super Frame comming into switch. Since you are using all 24 chanels for voice, the signaling from Telco should be the same.
If you had a CSU/DSU the signaling from Telco could hav been B8ZS, Extended Super Frame. This is used if you use some chanels for DATA and the others for voice.
D4, AMI, Super Frame should take care of you.
Good Luck!!
