User's Guide

Nortel Networks Confidential
40
UMT/DCL/DD/0002
411--8111--905
Preliminary 01.06/EN october 2001
UMTS01
CCM interfaces
Signal interfaces
One CCM supports up to three wide--band carriers with transmit and receive diversity in a tri--sectored
carrier configuration.
Each CCM is linked with the CEM and TRM by a point--to--point HSSL connection.
The two CCMs are linked by two signals:
the IML ATM links: 155 Mbit/s
the IMC links: 10 Mbit/s
The following figure shows the different interfaces of the CCM.