Aastra OpenCom 131 User Guide - Page 70
S2M Connector Module, in slot 1 in order to operate DECT applications properly.
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S2M Connector Module 5. S2M Connector Module The S2M connector module allows you to operate an OpenCom 130 / 150 on a primary rate access. This access provides up to 30 voice channels. You can also use the S2M port to network two systems, e.g. in order to use the OpenCom 130 / 150 as a subsidiary system or DECT server. Note on DECT Applications in Conjunction with S2M If an S2M connector module is installed in the OpenCom 130 / 150, please consider the following restriction for DECT applications: It is not sufficient, to install a Upn interface card (e.g. "4 x Upn") into slot 2 (or into slot 3 with the OpenCom 150). In every case, you need to run a Upn interface card ("4 x Upn", "8 x Upn" or "2 x S0 and 6 x Upn") in slot 1 in order to operate DECT applications properly. Note: The maximum cable attenuation between the OpenCom 130 / 150 and the other system (NT or telephone exchange) must not exceed 6 dB. This corresponds to a length of approx. 150 to 200 m, depending on the type of cable used. Default setting Upn S2M Upn1 2+3 S02 a/b 3+4 Sensor Sensor 1+2 3 RJ45 RJ45 a/b LAN Actuator DC V.24 S01 S02 1+2 1+2 in Location of the S2M port on the basic module of the OpenCom 130 V.24 Actuator 1+2 3+4 Slot 1 S01 S02 1-1 1-2 Slot 2 S01 2-1 2-2 Slot 3 3-1 3-2 Slot 4 4-1 4-2 Slot 5 5-1 5-2 1+2 Sensor 3+4 Door S2M 1+2 S03 S04 1-3 1-4 1-5 2-3 2-4 S02 2-5 3-3 3-4 4-3 4-4 5-3 5-4 3-5 4-5 5-5 Location of the S2M port on the OpenCom 150 68