Interalia XMU+, Installation Handbook, Page: 31 / 63

XMU+ Installation Handbook rev.06 25
Matching XMU+ Cables and Connectors
Matching Connector Pinouts to XMU+ Line Cards
Most XMU+ line cards are cabled using the RJ-21 50-pin Connector on page 25.
Exceptions include:
Š The MOH line card, which uses the RCA/Phono Connectors on page 26.
Š
T1 line cards, which use a digital signal to connect to the XMU+.
RJ-21 50-pin Connector
Use the Amphenol RJ-21 50-pin Connector
to connect the following line cards to
telephone lines or PBX trunks:
Š
Hybrid Analog line card.
Š
Low Impedance line card.
Š
MWR line card.
Each line on the Amphenol 50-pin
connector has a tip (-)/ring (+) pair. The
tip/ring pair performs like a regular
telephone extension operating in the Ring
Start Mode
For lines operating in other modes, the
tip/ring pair provides the message audio
path.