电话通讯系统采用虚拟交换局方式，中继线60条，展馆内外采用ic卡。
With 60 junction lines, the telephone communication system will operate by virtual exchange. The Exhibition Hall is equipped with IC telephones.
电话通讯系统采用虚拟交换局方式，中继线60条，展馆内外采用ic卡。
With 60 junction lines, the telephone communication system will operate by virtual exchange. The Exhibition Hall is equipped with IC telephones.
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