Hardware manual

Issue 8 Electra Elite
5 - 36 Installing Electronic Telephone Units
4.5.2 Installation
In COI mode, a maximum of 16 COIB(4)-U20/30 ETUs
can be installed in IF slots in the Electra Elite 192 system
limited by 64 trunks.
For Caller ID in COID mode, a maximum of eight
COIB(4)-U20 ETUs can be installed in slots S1~S4 in the
basic or first expansion KSU (S7000 or lower).
Using S8000 or higher, a maximum of 14 COIB(4)-U20/
30 ETUs can be installed in any interface slot in the
system, limited by 64 trunks.
Figure 5-20 COIB(4)-U20/U30 ETU