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Install SpectraLink 6000 System  
PN: 1725-36097-001_J.doc 
33
 
Multi-Unit SpectraLink 6100 MCUs 
 
No IPC cable is connected to the 
IN
 port of the first unit. An Open 
Applications Interface (OAI) Telephony Gateway may be 
connected to the 
OUT
 port of the last unit. 
 
 
When adding a new or replacement MCU to an existing system, 
the MCUs will perform a software update. See Chapter 8 section 
Replace an MCU
 for further details.