| 摘要 |
FIELD: communications engineering; selection of preferred communication system. SUBSTANCE: subscriber s telephone set checks information about description of system received to identify its geography. Then it finds out if system detected is best suitable one for its use in particular geographical region. If it is, subscriber s telephone set ensures servicing using system found. If it is not best system suited to particular geographical region, subscriber s telephone set tries to find more suitable system. EFFECT: enhanced operating reliability of system. 19 cl, 4 dwg, 1 tbl
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