Telco stands for Telephone Company
Roshan - telco - was created in 2003.
Southern Cross Telco was created in 1994.
Telco company designs a solution in other for the network to create a service with another network. Telco also provides telephone services. Telco tries to find solutions to provide a better and faster service. By making the communications ways stronger.
Different countries have different telco and each telco has several plans
Central Office
Tata Engineering and Locomotive Company
Tata engineering and locomotive company
900
Csu/DSU
With a valid warrant there are lots of ways. The simplest is just to place a listening device or recorder in parallel with the wire pair coming from the Telco. It can also be done at the Telco switch or on transmission lines or over the air by sophisticated equipment.
An external power supply is required. The telco's don't supply power for ISDN lines. If the power fails, the phones won't work.Special digital phones are required or a Terminal Adapter to talk to the existing POTS devices.It is very expensive to upgrade a central office switch ($500,000+) to ISDNIf the ISDN fails - the phone fails.