Interfacing the automated maritime mobile telephone with the U.S. public switched telephone network
from $13.99
Chatline and message services: A report on the provision of chatline and message services by means of the British Telecommunications public switched telephone network
from $3.33
IEC 60839-5-6 Ed. 1.0 b:1991, Alarm systems - Part 5: Requirements for alarm transmission systems - Section 6: Requirements for voice communicator systems using the public switched telephone network
from $55.00
Polycom VoiceStation 100 Conference Phone System
from $47.84
VoIP and PBX Security and Forensics: A Practical Approach (SpringerBriefs in Electrical and Computer Engineering)
$54.99
from $51.52
RIIEYOCA RJ12 Telephone Line Switch On/Off 6P6C Male to Female Telephone Land Line Phone Cord with Disconnect Switch, Black, 50CM/1.6Feet
from $9.99
AT&T TRIMLINE 213-11 Corded Home Phone with Extra Big Buttons & Visual Ringer. No AC Power Required, Improved Easy-wall-mount, Lighted Keypad, 10 Speed Dial Keys, Volume Control,Senior Friendly. BLACK
$19.25
from $12.30
Vegamax Power Button On/Off Disconnect Switch for 2 Line Phones and Telephone Systems
Polycom VoiceStation 100 Conference Phone System (Renewed)
from $73.48
Introduction to Communications Technologies: A Guide for Non-Engineers, Third Edition (Technology for Non-Engineers)
from $64.75
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