IBM 2681 Service Guide - Page 88
For modem with approval number PTC 211/01/134, limits for compliance with Telecom - service manual
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specifications, the associated equipment shall be set to ensure that calls are answered between 3 and 30 seconds of receipt of ringing. v For correct operation, the total of the RN's of all devices connected to a single line at any time should not exceed 5. For modem with approval number PTC 211/01/134 The grant of a Telepermit for any item of terminal equipment indicates only that Telecom has accepted that the item complies with the minimum conditions for connection to its network. It indicates no endorsement of the product by Telecom, nor does it provide any sort of warranty. Above all, it provides no assurance that any item will work correctly in all respects with another item of Telepermitted equipment of a different make or model, nor does it imply that any product is compatible with all of Telecom's network services. This equipment is not capable under all operating conditions of correct operation at the higher speed which it is designed. 33.6 kbit/s and 56 kbit/s connections are likely to be restricted to lower bit rates when connected to some PSTN implementations. Telecom will accept no responsibility should difficulties arise in such circumstances. This equipment shall not be used in any manner which could constitute a nuisance to other Telecom customers. Some parameters required for compliance with Telecom's Telepermit requirements are dependent on the equipment (PC) associated with this modem. The associated equipment shall be set to operate within the following limits for compliance with Telecom's specification:1. For automatically initiated calls to the same number a. There shall be no more than 10 call attempts to the same number within any 30 minute period for a single manual call initiation, and b. The equipment shall go on-hook for a period of not less than 30 seconds between the end of one attempt and the beginning of the next attempt. 2. For automatically initiated calls to different numbers The equipment shall go on-hook for a period of not less than 5 seconds between the end of one attempt and the beginning of the next attempt. 3. Auto-answering incoming calls Incoming calls shall be answered between 3 and 30 seconds of receipt of ringing. 76 ThinkPad® R40 Series Service and Troubleshooting Guide