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Saturday, February 19, 2011

Interfaces and Protocols

The Telecommunication system adopts the distributed network structure. Its functions are distributed among different physical entities. To accomplish a task, all devices must work together. All devices and subsystems are interconnected through interfaces based on specific protocols. In the communication system, the messages that are required to coordinate different entities are called signaling. The signaling system instructs every part of a system to work and coordinate together to accomplish tasks. Signaling messages are described in interface protocols and specifications. An interface refers to the connecting point between two adjacent network entities. A protocol defines rules to be complied with for exchanging information on the connecting point. Protocols are of the layer structure. The protocol of an interface is often described in the application layer.

Network Architecture:




Tables Below shows all interfaces its corresponding protocols used between different telecom entities.


Entities Connected
Interface Name
Signaling and Protocol
MSCe/MGW–BSC
A
BSAP
MSCe–VLR
B
Internal protocol
MSCe–HLR
C
MAP
VLR–HLR
D
MAP
MSCe–MGW
39/xx
H.248
MSCe–MSCe
zz
SIPI
MSCe–MC
Q
MAP
MSCe–SCP
T1
WIN
MSCe–SG
SIGTRAN



















2 comments:

  1. Dear Mr.Mohammad,
    First of all i want to express my best hello for you, so if you have any complete document on Media Gateway (MGW) please share it with me and if it be in Persian it will be more good.
    I look forward to hearing from you !

    Best Regards,
    Abdul Hakim Mangal
    Core Network Engineer at ZTE
    0093793484319
    abhakimm@gmail.com

    ReplyDelete
  2. Very nice information about interface and protocols.I like it. Mah telecom is the call cheap, low cost international calls, online top up, pinless dialing, pc mobile dialer and VOIP service provider throughout the globe.

    ReplyDelete