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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personnel is required to travel to EuroTel's premises under this maintenance and support contract, but is not able to perform the required services due to reasons beyond the control of Sicap Ltd, which means no physical access to the system or force major as well as for support cases not included under standard service, as per clause 1.1, then EuroTel shall pay all costs and expenses (e.g. hours, travel and accommodation expenses). All payments due under this Maintenance and Support contract shall be due and payable 30 days after the invoice date, with the first invoice to be issued on the date this Maintenance and Support contract comes into full force and effect. [LOGO] sicap M&S contract -------------------------------------------------------------------------------- If any payment is not received by Sicap Ltd on the date or dates, as laid down in this clause, or as may be further agreed upon by the parties, then Sicap Ltd has the right to suspend the services to EuroTel until payment has been received. Before suspending the services to EuroTel, a notification from Sicap Ltd will be given. In the event of a suspension of services by Sicap Ltd, as a result of a delay or lack of payment by EuroTel, Sicap Ltd will not be responsible for any damages resulting from this suspension. 7.4 Co-operation by EuroTel EuroTel shall always give Sicap Ltd full co-operation and provide Sicap Ltd in good time with required data or information useful and necessary to the proper execution of the Maintenance and Support contract. EuroTel shall be responsible to maintain adequate climatic conditions in the spaces where the SICAP(R) systems is placed, such in accordance with the site specifications as mentioned in the Purchase and License Contract for the system. EuroTel shall prevent: o Installation deficiencies (unstable electricity supply network or others) that result from the non-observance of the installation standards of the Sicap Ltd equipment o The use of degraded or inappropriate consumable and accessories, contrary to the manufacturer's specifications o Negligence, carelessness or improper use on the part of EuroTel, specifically, the dropping of the equipment or the existence of foreign objects inside the equipment; o Incompatibilities resulting from modifications, repairs or maintenance carried out by personnel not belonging to Sicap Ltd and/or third party, or the connection of equipment not supplied or approved by Sicap Ltd. EuroTel shall grant access to Sicap Ltd or third party personnel to EuroTel's site in question, provided that this personnel abides by the security rules of EuroTel. Sicap Ltd or third party personnel will always be accompanied by a representative of EuroTel, if so required by EuroTel. EuroTel shall provide Sicap Ltd with an actual list stating the system administrators and how they can be reached. 7.5 Term and termination This contract replaces in full the Annex 7 "Maintenance and Support for SICAP(R) modules PPB, VCA and OTA and Sun Hardware" which is an integral part of the original Swisscom PURCHASE & LICENSE CONTRACT, made effective on 06 April 1998. It shall be effective on 06 October 2000 and shall have a duration of two years. The prices remain valid for the first 12 months. After this period, Sicap Ltd reserves the right to adjust the prices annually. The offer must be submitted three (3) months in advance and EuroTel may decide within one (1) month to prolong or terminate this maintenance and support contract. If EuroTel doesn't react in writing, the new offer shall be considered as accepted. [LOGO] sicap M&S contract -------------------------------------------------------------------------------- After the initial period of two years, the maintenance and support contract shall be automatically renewed for a period of one year on each renewal date, unless one of the parties terminates the maintenance and support contract through written notification to the other party in the form of a registered letter with proof of receipt, at least six (6) weeks prior to the renewal date. There shall be no reimbursement of any paid fee. In case of a substantial breach of this maintenance and support contract by either party, which is not remedied within thirty days from the other party's notice thereof, the other party shall have the right to terminate this maintenance and support contract with immediate effect without juridical procedures. The termination or expiration of the maintenance and support contract for any reason whatever shall be without prejudice to any other right or obligation of any party hereto in respect of this maintenance and support contract which have arisen prior to such termination. 7.6 Liability Sicap Ltd's
"""

Extract the exact clause related to "Warranty Duration" from the excerpt above.

assistant: Not found.