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SMS Basics and Types Explained

Learn about SMS basics, including network elements, MO/MT call flow, SMS types (P2P, A2P, P2N, I2P), and the difference between SMS and MMS.

sms

mobile communication

gsm

SMS MO and MT Call Flow Explained

Explore the SMS architecture, focusing on Mobile Originated (MO) and Mobile Terminated (MT) call flows. Understand the message signaling between network elements.

sms

call flow

mobile communication

SMS Network Architecture and Key Elements

Explore the architecture of SMS networks within GSM, including SMSC, HLR, MSC, VLR, BSC, BTS, and MS. Understand MO and MT call flows.

sms

gsm

network architecture

Troubleshooting GSM CM Service Re-Establishment Failures

Diagnose and resolve frequent call drops in GSM networks due to CM Service Re-Establishment failures. Understand the process, key messages, and troubleshooting steps.

gsm

mobile communication

call reestablishment

Troubleshooting UE Connection Failures: Immediate Assignment Issues in GSM

A guide to diagnosing why a UE fails to receive an immediate assignment after sending a channel request (RACH) in GSM networks, covering UE transmission and network reception issues.

gsm

channel request

troubleshooting

Understanding OFDMA in Mobile Wireless Communication

Explore OFDMA, a key multiple access technique in modern wireless systems like LTE and 5G, enabling efficient spectrum use and flexible resource allocation.

mobile communication

wireless technology

ofdma

WCDMA MO/MT Call Flow: Mobile Originated and Terminated Calls

Explore the WCDMA mobile originated (MO) and mobile terminated (MT) call flows, including message sequences and information elements.

wcdma

mobile communication

call flow

WCDMA Packet Switched (PS) Data Call Flow Explained

Overview of the packet-switched call flow (PS call/Data call) between a Mobile device (UE) and the network, compliant with the WCDMA standard.

wcdma

packet switch

data call