Service Policies

Warranty Period

Standard products manufactured by CTS are covered by 2 to 5 years global warranty from the date of shipped.

Warranty PeriodProduct Series
Two yearsFOS Series – Fiber switches
ESW Series – Ethernet swiches
HES Series – FTTH CPE switches
VRG/FWR – Fiber gateways
CVT/MCT Series – Media converters
SFP Series
Power upply and other accessories
Five yearsIPC Series – Industrial grade converters with PoE
IPS Series – Industrial grade switches with PoE
IAC Series – Industrial grade converters
IES Series – Industrial grade switches
Optional five yearsFor selected products its possible to purchase an extension of the warranty to five years. Currently we offer this possibility for:
FOS-51xx series
ESW-51xx series

Standard Warranty

Within the stated warranty term CTS assumes responsibility for all material or workmanship defects of the items manufacture or supplier by CTS, except defects caused by:

  • Natural disaster, lightning strike, overvoltage, electric power of an electromagnetic field;
  • Removal or alternation of product or part identification labels
  • Unauthorized repairs
  • Improper use of the items(contrary to the stated purpose and scope of use described in the product documentation);

Other products and accessories not manufactured by CTS are limited to the warranty provided by the original manufacturer.

Post-Warranty Repairs

CTS will charge for post-warranty repairs, and shall provide the repair cost listing all charges. The repair process will be proceeded upon approval of the customer. And customer is also responsible for two-way delivery cost including customs duty.

CTS Service Policy and Procedure

ADVRMA(DOA) Terms and Conditions

CTS undertakes to replace any product found to be defective on arrival within 14 business days of its arrival date, according to the arrival notice provided by forwarder, as per the terms and conditions stated below:

Request ADVRMA

DOA cases are handled with the highest priority in CTS.

(1) Customer shall contact the sales offices and confirm the problems with our technical engineers.
(2) After the DOA reason has been identified, “Advanced RMA Request Form” shall be submitted. The form shall contain model name, quantity, serial number, invoice date, and the DOA reason.
(3) The ADVRMA number will be issued by the CTS RMA center within two working days.

Deliver Replacement Unit

CTS production team will manufacture the new unit and deliver within 5 working days under the circumstances that all parts are available. We will take full responsibility for the product and transportation charges.

Return DOA Unit

(1) The product must be returned in its original packaging and must include any accessories that came with the product. Otherwise, a “Repackaging Fee” may be assessed upon CTS acceptance of returned product.
(2) Customer shall provide the invoice and packing list with ADVRMA number on the paper for CTS to arrange the pickup and please state clear on the paper with the text: “Invoice for customs purposes only”.

Provide Repair Report

CTS RMA center will analyze the reason of defective unit, find out the root cause and come up with the “Repair Analysis Report”. If the defect is not caused by CTS design or manufacturing, customer will be charged for the repair cost.

RMA Terms and Conditions

Request RMA

(1) Customer shall submit the “RMA request form” and fill out the basic information such as model name, quantity, serial number, invoice date, and the problem description.
(2) Please avoid using vague descriptions such as “failure” or “does not work”, and try to specify the situation and trouble. Customer may contact our Field Application Engineers (FAE) for helping identify the cause of problem.
(3) The RMA number will be issued by the CTS RMA center within two working days.

Return RMA Unit

(1) We recommend to send the product back in its original packaging and without accessories in order to prevent them from missing and save shipping cost.
(2) All products must be returned in proper packed ESD material or PE/bubble bags. CTS reserves the right to return unrepaired items at customer cost if inappropriate packing.
(3) Please attach the packing list and invoice with RMA number on the box/carton, and provide both soft copy to CTS.
(4) If the item is within warranty, CTS will pay for the either the outward or inward freight. As for post-warranty cases, customers must take full responsibility for the both import and export transportation fee.

Provide Repair Report

(1) CTS RMA center will examine the problems and recorded in the “Repair Analysis Report”.
(2) We will charge for repairing if the product is repaired after the warranty period expired or damaged by the factors not included in standard warranty. In this case, customer will receive the “Repair Cost” with all charges together with “Repair Analysis Report” in 7 working days. And the repair process will be proceeded upon approval of the customer.

Service ChargeProduct Series
50 USDMore than 24 ports and Rack
25 USD5-14 ports devieces
15 USDMedia Converters
Component CostFor fiber, chipset, PCBA, power and other parts. CTS will provide the cost of each component for reference.

(3) The repair time is approximately 7~14 working days depends on the quantity and the complexity. In addition, the turnaround time may be delayed if the customer:

  •  doesn’t sign and return the proforma invoice (P/I);
  •  gives an insufficient error description;
  •  fails to pay the accounts receivable (A/R) within the due date;
  •  delays a reply or fails to reply to CTS request for further information such as application environment and configuration.

(4) We will send products which are not manufactured by CTS to the original manufacturer for repair. This approximately takes 10~20 working days.
(5) CTS offers a continuous repair service after the product End-of-Life (EOL) date as long as the parts are still available in the market.

Ship Back RMA Unit

CTS usually ships RMA return by express. If the customer request to deliver by air Cargo or sea shipment, the extra cost must be paid by customer. If there’s any special requirement or arrangement, please indicate when shipping the product to us.

This policy has been imposed by CTS Group and cannot be altered or negotiated. CTS Group reserves the right to amend the Terms and Conditions without prior notice or consent.


CTS Inc. is dedicated to the creation and delivery of high-quality products. To ensure continued innovation, CTS may periodically elect to discontinue specific parts or products. For various reasons, products may reach their End-of-life. Including technology innovation, shift in market demands, source parts no longer available, or product simply mature over time and is replaced by functionally superior technology.

CTS’s policy is aim to communicate important milestones and help customers with the impact on their network system and manage the product transition.



End of Life Notification (EOL)LCS – 9 mosThe date customers are notified of our intention to EOL a product
Last Time Order (LTO)LCS – 3mosLast date CTS will honor purchase orders for the product. The product is no longer for sale after this date.
Last Customer Ship (LCS)LCS DateLast date CTS Group will ship the product. If the purchase order includes a requested ship date, the request ship date may not exceed LCS date.
End of Servie (EOS)LCS + 2 year warrantyEnd of service date is the date after which any type of technical support, such as manufactured, improved, repaired or maintained will no longer be available. CTS will use reasonable effort to provide spares and replacements parts for an period of 2 years after the EOS date in accordance with are Return Materials Auhorization.
LCS + 5 year warranty

The policies outlined and listed above are general policies and may vary among CTS products. Please reference the announcement for the latest life cycle status of CTS products.