fully automatic international service
全自动国际业务 fully automatic international service 国际经济业务,国际业务 international transaction ..
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R2是随路信令的一种,它满足半自动及全自动业务的各种要求,在国际上有较广泛的应用。
As one of the channel associated signaling, R2 meets all kinds of demands in the semiautomatic or automatic operations and has wide applications in the international area.
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