Telephony MCP Server

```mermaid sequenceDiagram participant User participant LLM as Claude participant MCPClient as MCP Client participant TelephonyMCP as Telephony MCP Server participant VonageSMS as Vonage SMS API participant Recipient User->>LLM: "Send a message to my friend..." LLM->>MCPClient: Intent: send_sms activate MCPClient MCPClient->>TelephonyMCP: Execute send_sms(to, text) activate TelephonyMCP TelephonyMCP->>VonageSMS: API Request: Send SMS activate VonageSMS VonageSMS->>Recipient: SMS: "Hi, I'm running 10 minutes late..." VonageSMS-->>TelephonyMCP: Return Success Status deactivate VonageSMS TelephonyMCP-->>MCPClient: Return Success deactivate TelephonyMCP MCPClient-->>LLM: Pass Success to LLM deactivate MCPClient LLM->>User: "Ok, I've sent the message to your friend." ```