Related terms:
gte
ani
pbx
itt
psap
voip
routed
trunks
nortel
spun off
wireline
bellsouth
voice mail
switchboard
bell system
ali database
bell atlantic
long distance
mobile network
telephone network
telephone exchange
emergency service
telephone service
operating companies
verizon communications
alexander graham bell
bell telephone company
public safety answering point
national emergency number association
chesapeake and potomac telephone company
Wikipedia sources:
GTE
9-1-1
Bell System
Caller ID
Ericsson
Phreaking
Verizon Communications
Enhanced 911
Timeline of the telephone
Telephone tapping
Area code 562
Telephone number
Communications in India
Private branch exchange
Digital subscriber line access multiplexer
Context for words:
telephone
company
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