Standard By:Telecommunications Industry Association , 02/01/1989
Published:02/01/1989
Pages:234
File Size:1 file , 7.1 MB
Language:English
Original price was: $322.00.$161.00Current price is: $161.00.
Requirements for Private Branch Exchange (PBX) Switching Equipment
Telecommunications Industry Association , 02/01/1989
Pages: 234
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