Configuring Sms Long Code Setup in Marketing Cloud Advanced

Provisioning long codes in Salesforce Marketing Cloud
Passing additional parameters to queueMO in SFMC

Passing custom parameters to QueueMO in Salesforce Marketing Cloud
Enabling Two-Way SMS in Agentforce

Agentforce supports two-way SMS, learn how to set it up
Sending Sms In Almost-Realtime Via Automation Event Triggered Flow

Using E.164 phone format for instant SMS triggers in SFMC