STD: Subscriber Trunk Dialling
What is the full form of STD?
The meaning or full form of STD is "Subscriber Trunk Dialling".

What others reading:
• DNS Full Form | • EDGE Full Form |
• GPRS Full Form | • GSM Full Form |
• ICT Full Form | • IMAP Full Form |
• ISD Full Form | • PCO Full Form |
Please share this...