Title
Voice Vox: Mobile Call Establishment using Session Initialization Protocol (SIP) with out any Payment to GSM Network,Used
Delivery time: 8-12 business days (International)
Voice over IP (VoIP) technology is currently finding its place in the telecommunication market. It enables a telecommunication company to cut cost by allowing a single network to transmit both data and voice traffic. Voice Vox is the complete implementation of VOIP client and also describe how to build telecommunication applications using different layers of the Open Systems Interconnection (OSI) model. The book in your hand will lead you in details how you can develop a system based on all OSI layers. These layers are application, presentation, session, transport, network, data link and physical. In Voice Vox, the reader will find how to design the packets at different layers in order to effectively communicate with each other. At the application layer, Session Initiation Protocol (SIP) is used for establishing sessions between two parties using Asterisk as a telephone private branch exchange (PBX) server. At the session layer, the user can implement Realtime Transport Protocol (RTP) and Session Description Protocol (SDP) for realtime data transmission between two call parties. At the transport layer, the User Datagram Protocol (UDP) is used for the transmission of audio data.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.
Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.