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Change companding – Polycom SpectraLink SCM408 User Manual

Page 60

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SpectraLink 6100 MCU: Installation and Operation: SpectraLink 6000 System

PN: 1725-36097-001_L.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.