[asterisk-biz] SIP to PSTN Hardware

[Alex Balashov]

Although, if you are limited to a maximum of 4 PRIs per box (assuming this
is even possible), you have to know which channels are available on which
PRIs at which time so you can direct your outbound calls correctly. 
That's where some sort of device that can take all of them at once would
really show its beneficial colours.

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Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : +1-678-954-0670
Direct : +1-678-954-0671