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Polycom spectralink sca408 User Manual

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SpectraLink 6100 MCU: Installation and Operation: SpectraLink 6000 System 
PN: 1725-36097-001_J.doc 
60 
2.  Power the system on. 
STATUS
 LEDs
 5
 and 
1
 should be lit, 
indicating frequency selection mode. One of the 
LINE
 LEDs from 
1
 
to 
7
 will be indicating the current frequency selected for the MCU. 
3.  Use the 
STEP
 button to select the desired new sequence.  
4.  Press the 
DEL/ENTER
 button. The LED indicates the new frequency 
that has been selected. 
5.  Return the mode switch to the 
NORMAL
 position. 
6.  Repeat steps 1 through 5 for each MCU of a multi-unit 
installation. 
Change Companding 
The factory setting on the SpectraLink 6100 MCU is compatible with 
Mu-law companding (signal compression), which is the standard 
used by most PBXs in North America. Systems outside North 
America generally use A-law companding. If the PBX companding is 
incompatible with the MCU’s, the handsets will have distorted or 
hissing dial tone, and voice will be unintelligible. 
 
Before you begin, if the system has more than one MCU, erase the 
configurations from all MCUs except MCU 1. Refer to Chapter 8, 
section Replace an MCU for instructions. 
To change the default from Mu- to A-law on the SpectraLink 6100 
MCU follow these steps. 
1.  Power the system off. 
2.  Slide the mode switch on the first MCU to the 
ADMIN
 position. 
3.  Power the system on. 
STATUS
 LEDs 
2, 3
, and 
4
 will be solid green. 
4.  Press the 
STEP
 button once. 
STATUS
 LEDs 
2
 and 
5
 will be lit. 
5.  If the LED for 
LINE 1
 is lit, the system is set for Mu-law. 
If the LED for 
LINE 2
 is lit, the system is set for A-law. 
6.  Press the 
DEL/ENTER
 button to toggle between Mu-law and A-law. 
7.  When the correct 
LINE
 LED is lit, return the mode switch to the 
NORMAL
 position.