Post on 15-Aug-2015
1
PTCL Call Setup Between Different
Exchanges
3
Local Call Setup within the Same Local Exchange
MDF LE
User A
User B
DP DC
Distribution Point
Distribution Cabinet
Main Distribution
Frame
Copper Cable
Local Exchange
4
Local Call Setup between Different Local Exchanges
MDF LE DDF
DDFL.E.MDF
Digital Distribution
Frame
User A
User B
5
Transit Call Setup between Different Transit Exchanges
LE
LEDDF
TEDDF
Transit Exchange
(TE)
Optical Fibre
Optical Fibre
TE
TEDDF
LEDDF
LE
User A
User B
Transit Exchange
(TE)
6
International Call Setup between Gateway Exchanges
LE
LEDDF
TEDDF
TE
Optical Fibre
Optical Fibre
TE
TEDDF
LEDDF
LE
User A
User B
IGEDDF
IGE
IGEIGEDDF
Submarine (OF) Cable
Int. Gateway Ex. (IGE)
Satellite
7
Prepared by:Tayyab Sher
Contac:+923017252598
International Islamic UniversityIslamabad
Supervised by: Engr. Khalid Sarwar
Contact:+923135003545
PTCL Satellite Town Rawalpindi