Chapter 4: C4 CMTS General Installation Requirements
STANDARD Revision 1.0
C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved.
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Captive fasteners of Crossover Connector for RCMs
5.0 +/- 5 in-lbs.
F-connectors of PICs
20.0 +/- 0.5 in.lbs.
If used only for F-connectors, torque wrench should be self limiting to 20 in-lbs.
Items Not Supplied
The following items are not included with the C4 CMTS. Obtain these items before installation:
Appropriate network cables
Operator console or PC with built-in asynchronous terminal emulation
Coaxial cables
48 VDC power supply
The CMTS requires one Router Control Module (RCM). To use the RCM, customers must order an Ethernet interface. You
may choose either a Small Form-factor Pluggable (SFP) or a 10G Small Form-factor Pluggable (XFP) to be used with the
RCM. For more information, see SFP and SFP Ethernet interfaces. If you plan to operate the C4 CMTS in duplex mode
(redundant control complexes), you must purchase one (1) C4 CMTS Router Control Module Crossover Connector (Part
Number 722891) along with the two RCMs and two SCMs.
Unpacking the C4 CMTS
CAUTION: Installation requires more than one person.
When unpacking the C4 CMTS, use the following steps and checklist:
Inspect the shipping crate before removing the unit. If there is evidence of damage to the crate upon receipt, request
an agent of the carrier to be present before removing the C4 CMTS.
Ensure the crate is right side up. Open crate and carefully remove the packaged unit inside. Then remove the
protective foam from the unit. Do not discard any optional items, which are typically packed in small boxes set in the
packing foam.