ATM Call Signaling | ATM Call Establishment Flow

This page of ATM (Asynchronous Transfer Mode) tutorial covers ATM call signaling or ATM call establishment flow. It covers ATM UNI signaling and ATM PNNI signaling.

ATM UNI Signaling

The figure-1 depicts UNI signaling messages exchanged between user and ATM network.

Following messages are exchanged between source host, network and destination host:
• Setup
• Call Proceeding
• Connect
• Connect ACK
• Release
• Release Complete

ATM PNNI Signaling

The figure-2 depicts PNNI signaling messages. This signaling type lies between private network node interface and between private network to network interface. Here routing protocol specifies selection of routes as per QoS need. PNNI is a signaling protocol for the exchange of messages between switches and private networks.

Following messages are exchanged between source machine, switches (source and transit) and destination machine.
• Setup
• Call proceeding
• Connect
• Connect ACK
• Release
• Release Complete

Similar posts on ATM (Asynchronous Transfer Mode)

Refer Following links to subtopics on this ATM tutorial:
ATM Network Architecture & Interfaces   ATM Protocol Stack  ATM services  ATM Switch  ATM Call Flow  ATM vs STM  ATM vs TDM  ATM versus Frame Relay  ATM AAL Layer Types 

Networking related links

What is Bridge
What is Router
What is Gateway
Firewall basics
TCP-IP Packet format
Difference between OSI and TCPIP layers
Difference between TCP UDP
Packet Switching vs Message Switching

RF and Wireless tutorials

WLAN  802.11ac  802.11ad  wimax  Zigbee  z-wave  GSM  LTE  UMTS  Bluetooth  UWB  IoT  satellite  Antenna  RADAR