Aastra OpenCom X320 User Guide - Page 47
Upn ports, U
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Installation Port assignment, termination, cable length working under the heading Direct Connection starting on page 132. 3.9.2 Upn ports Upn ports enable you to connect the digital system telephones OpenPhone 71, 73, 75 or OpenPhone 61, 63, 65 using a twin-wire cable. You can also connect DECT base stations to a Upn port. If you want to use cordless DECT handsets (e. g. OpenPhone 26, OpenPhone 27 or OpenPhone 28) you will need the DECT base station RFP 22/24. If the DECT base station is connected to a Upn port, four calls can be made simultaneously using the handsets. If the base station is connected to two Upn ports, eight calls can be made simultaneously. Please note however, that you can only make as many simultaneous external connections as there are externally-connected B channels available. The length of a twin-wire cable for a Upn port must not exceed a maximum of 1000 m. This cable may only be laid inside buildings. The length of a twin-wire cable for a Upn port on a Upn interface card may not exceed a maximum of 1000 m, where a 0.6 mm cable (with twisted pairs) is used. Each Upn port has a power consumption of about 3 W. Upn/RFP with 1 Upn 12345678 RFP with 2 Upn 12345678 Pin assignment of Upn ports To connect a digital system telephone or DECT base station, connect the pressure terminals to a UAE socket. 45