system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
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printer $[*], [*] printer $[*], personal computer $[*]. Cluiterports $[*], muxes $[*], multiport boards $[*], power supplies $[*], and [*] printers $[*] are subject to availability. All other equipment is subject to availability. Phone calls to the MMMW Support Department or Technical Department related to Technical Issues are also charged against your Technical Support Retainer in 15 minute increments. Example: If your office places a call to the MMMW Support Desk to receive help for a non-functioning printer, our Support Analyst will track and log the length of the call to deduct from the total of your available Technical Support Retainer. (c) If customer elects to not accept the Technical Support Retainer Contract, MMMW will make available to Customer support on their Technical Infrastructure in the following manner. MMMW will take Customer Technical related calls and process through MMMW Support Department. The Customers issue will then be queued and handled as soon as possible directly behind contracted Technical Supported clients. Customer is to be billed an Hourly rate of $[*] per hour on all Technical Related Issues, unless notified otherwise by MMMW. Customer is to incur the cost of swap equipment. Swap equipment is subject to availability. Customer is to incur the cost of travel time/expenses of MMMW Personal. (d) Customer, upon thirty days prior written notice, may cancel this Agreement at the end of the Initial Term and thereafter on each anniversary of the end of the Initial Term. MMMW may cancel this Agreement if the Customer does not remit payment according to the terms of MMMW's invoice. (e) The term of this Agreement consists of the Initial Term and any continuations. (f) Equipment under Warranty: A Manufacturer's Warranty accompanies most items, pleas refer to the Warranty for specific coverage. Copies of Warranty will be provided to Customer. Where applicable, Customer is to incur the cost for labor, travel time/expenses of MMMW personnel, swap equipment rental fees, and Phone Support from the MMMW Support Desk. 3. SERVICE (a) MMMW will provide on-call service for the Technical Infrastructure during the term of this Agreement from 7:00am to 5:00pm CST, with a guaranteed response time of 3 hours with a goal of on site within 2 hours. Support to include 7X24 hour pager support for emergency services. After the customer has 30 locations, MMMW will locate technical personnel in the current geography. If a system is not able to be on-line after hours, on-site help will be made available. (b) The Customer shall provide a suitable environment for the Technical Infrastructure in accordance with MMMW specifications of non-humid environment, between the temperature range of 60 degrees F and 80 degrees F. (c) MMMW may elect to: repair a failing hardware with new or serviceable used parts; or exchange the hardware with a hardware that is new or used but in good working order, cleaned, lubricated, adjusted and tested. (d) Replaced parts and hardware become MMMW's property or at clients discretion. [*] Confidential portions omitted and filed separately with the Securities and Exchange Commission. 3 (e) All programs (excluding any MMMW supplied), data, storage media not requiring service, parts, options, attachments or alterations not provided by MMMW shall be removed before hardware is submitted to MMMW for service. The Customer agrees that if any such material is not removed, it will be deemed to have been discarded by the Customer and shall not be liability of MMMW. (f) The Customer is responsible to implement appropriate safeguards to protect and/or recreate the Customer's data, should it be destroyed through hardware malfunction or otherwise (see exclusions 4b). (g) On Call Service Selection: At the time this Agreement is agreed to by the Customer, the Customer will have notified MMMW of the location(s) of the hardware. MMMW shall not be required to furnish On Call service at any other location. The Customer shall notify MMMW of any change in location and MMMW may elect not to provide On Call service at the changed location. i) The Customer shall provide full, free, timely and safe access to the hardware for MMMW to provide the service. ii) MMMW may elect to exchange or repair the hardware requiring remedial service during MMMW's normal service hours at the hardware location. MMMW may use a MMMW selected independent contractor for exchange service. MMMW accepts responsibility for all work performed. 4. EXCLUSIONS (a) There could be an increase in service time caused by accident, misuse, disaster, abuse, alterations, attachments, parts, options, or repairs not provided by MMMW, failure to provide a
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Extract the exact clause related to "Effective Date" from the excerpt above.