Polycom SoundStructure C16 Design Manual page 183

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A device's bus ID is automatically assigned to SoundStructure devices based

on how the systems are linked. The device that only has a connection on the

OBAM Out connector will have a bus ID of 1 and will be referred to as the

Master device. The remaining devices are numbered sequentially and are

referred to as Slave devices.

OBAM Cable Length

The OBAM cable supplied is 12 inches long and is designed to connect

between SoundStructure devices within an equipment rack. 1394B extenders

are not compatible with the OBAM interface.

Multiple Telephony Cards

While the devices are powered down, any required telephony cards should be

installed into the system. Telephony cards should be installed starting with the

Master device and working through the slave devices as shown in the follow-

ing figure where one TEL1 card is installed into the master device of a three

SoundStructure system.

Linking Multiple SoundStructure Devices with OBAM

C16 (bus id: 1)

C12 (bus id: 2)

C8 (bus id: 3)

PIN 5: GROUND

PIN 5: GROUND

PIN 5: GROUND

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