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1.1.3 Foreign Exchange Advantages The toll-free advantage can also be extended to access remote PSTNs. A Company can set up a PSTN
line in a remote office in a foreign country. Domestic users can then access the remote PSTN through the
PBX gateway while paying local or long distance phone rates instead of International phone rates.
With the soft key and circuit connect function, it is easily to implement the hot-line application. The remote
office can accesses to the PBX in headquarter as if it is in main office.