Specifications

MCD System Functionality
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• The 24-port ONSp card provides 24 ONS lines for provisioning extensions outside the
building. The ports on this card are protected against surge and lightning.
• The 12-port ONS/ 4-port LS Trunk Combination card provides analog line and trunk capa-
bility in a single card:
- 12 On-Premise Station (ONS) Lines for analog phones and four Loop Start (LS) trunks
for analog connection to a central office. The ONS ports on this card are protected
against lightning
- Four System Fail Transfer (SFT) relays that provide direct connection between an
analog phone and a Loop Start trunk in the event of a system or power failure
- Custom Local Access Signaling Services (CLASS) is supported on the ONS circuits.
CLASS allows the 3300 ICP system to pass Calling Line ID digits and CLASS name
information to display sets that support Caller ID functionality.
Any card can fit into either slot and the cards can be inserted while the unit is operational.
Analog Main Board/Analog Option Board
The MXe II and CX (i) (II) Controllers support the Analog Main Board (AMB). In addition, the
CX (i) (II) can support the Analog Option Board (AOB).
The Analog Main Board supports
• Six Loop Start (LS) trunks
• Four On-Premise (ONS) lines (the first 2 ports are surge-protected)
• Two Power Fail Transfer (PFT) ports
• One Music On Hold (MOH) circuit
• One Loudspeaker Paging circuit
The AOB provides the controller with an additional
• Six LS trunks
• Four ONS lines
• One Music On Hold (MOH) circuit
• One Loudspeaker Paging circuit
Custom Local Area Signaling Services (CLASS) is supported on embedded LS trunks and ONS
lines. CLASS enables the 3300 ICP system to pass Calling Line ID digits and CLASS name
information to display sets that support Caller ID functionality.
Note: ASU IIs support DTMF phones only; pulse or rotary dial phones are not supported.