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SpectraLink Corporation T1 Remote Module Installation
Link WTS – Link 3000 MCU
2.2 T1 Configuration Requirements
T1 circuits will connect expansion shelves directly to the System Controller shelf via the
SpectraLink provided Intershelf Junction Panel. The Intershelf Junction Panel is always
co-located with the system controller shelf.
The following configuration requirements apply to the T1 lines connecting the Link 3000
MCU local and remote shelves.
All T1 circuits for networking the Link WTS must be Extended Superframe Format
(ESF).
T1 circuits must be a full T1 (not fractional).
T1 circuits must be 64Kbps (not 56Kbps) per channel.
Line coding for the T1 circuits must be Bipolar 8-bit Zero Substitution (B8ZS).
T1 circuits should be terminated as close to the Link 3000 MCU shelves as possible,
at both the System Controller site and the Expansion Controller site(s).
One or two T1 circuits are required per remote Link 3000 MCU Expansion Shelf.
• One T1 circuit is required for the first five Interface Module cards in a Remote
Expansion shelf.
• Two T1 circuits are required for 6 or more Interface Module cards installed in the
remote expansion shelf. Note that 1 - 10 Interface Module cards may be installed
in any expansion shelf.
The T1 circuit must be activated and verified to be in proper working order at least
one week in advance of the networked Link WTS scheduled installation.
Channel Service Unit (CSU)
A Channel Service Unit (CSU) must be installed at each end of the T1 circuit.
• The ADC Kentrox T-SERV II or other comparable CSU models are satisfactory.
• From the CSU, the T1 circuit must be provided to the SpectraLink system on an
RJ-48C modular connector.
• The CSU must have an independent power supply, per manufacturer
specifications.
Part Number: 72-0059-06-E.doc Page 12