Practical VoIP using Vocal
Language: English
Published by O'Reilly & Associates, 2002
- Softcover
- Used
Condition: Used - Good
£ 44.91
Quantity: 1 available
Add to basketSeller Inventory # 3281879_626_3x
- Title
- Practical VoIP using Vocal
- Author
- Dang, Luan
- Publisher
- O'Reilly & Associates
- Publication year
- 2002
- Condition
- Good
- Binding
- Soft cover
- Language
- English
- ISBN 10
- 0596000782
- ISBN 13
- 9780596000783
While many books describe the theory behind Voice over IP, only Practical VoIP Using VOCAL describes how such a phone system was actually built, and how you too can acquire the source code, install it onto a system, connect phones, and make calls.
VOCAL (the Vovida Open Communication Application Library) is an open source software project that provides call control, routing, media, policy, billing information and provisioning on a system that can range from a single box in a lab with a few test phones to a large, multi-host carrier grade network supporting hundreds of thousands of users. VOCAL is freely available from the Cisco Systems-sponsored Vovida.org community web site (www.vovida.org).
A Silicon Valley start-up called Vovida Networks, Inc (think of VOice, VIdeo, DAta) created VOCAL and invested over one hundred man years into its development. Since Cisco acquired Vovida in 2000, individuals representing every significant telecom company and service provider in the world have downloaded the source code. Today, more and more people are successfully building VOCAL into professional solutions, while contributing fixes and new functionality back to Vovida.org.
Because VOCAL is open source, you can look "under the hood" to the base code and protocol stack levels and discover not only how the system works, but also how common problems are being worked out in the development environment. We're hoping that you will be inspired to take this system to another level by implementing a feature or functionality that no one has thought of before.
Written by a team from Vovida Networks, Practical VoIP Using VOCAL includes the following topics
:
- Installing and configuring VOCAL 1.4.0 onto a single host and onto a multi-host network with phones and gateways
- C++, C and Java architecture found within VOCAL
- Provisioning a VoIP system
- SIP (Session Initiation Protocol), SDP (Session Description Protocol) and RTP (Real-time Transport Protocol) for call control and media
- TRIP (Telephony Routing over IP), DNS SRV and ENUM for routing
- MGCP (Media Gateway Control Protocol) and H.323 for call control and translation into SIP
- COPS (Common Open Policy Service), OSP (Open Settlement Protocol) and RSVP (Reservation Protocol) for policy and Quality of Service
- RADIUS (Remote Authentication Dial In User Service) for interfacing with billing servers
- SNMP (Simple Network Management Protocol)
If you're interested in VoIP, this is the only book available that focuses on the real issues facing programmers and administrators who need to work with these technologies.
"Synopsis" may belong to another edition of this title.
About the Author
Cullen Jennings is the Manager of Software Development in the Voice Architecture Group at Cisco Systems. Previously, he was vice president of engineering for Vovida Networks. His background includes management, consulting, and development both for technology-based companies and for educational institutions. Cullen is a member of the IEEE and ACM and has published numerous technical articles.
Luan Dang is Director of Software Development at Cisco Systems. Previously, Luan was Senior Vice President, Chief Technology Officer and Co-Founder of Vovida Networks. Luan is currently a member of the Technical Advisory Council for the International Softswitch Consortium and has previously filed telephony patents for voice-over-IP (1999) and caller IP (1998). Luan has also been granted a patent for the display screen management apparatus in 2000.
"About the title" may belong to another edition of this title.
Shipping rates from Germany to U.S.A.
| Item | 25 to 45 business days | 8 to 14 business days |
|---|---|---|
| First item | £ 89.23 | £ 110.48 |
Payment methods
- Bank Wire Transfer
- Check
- Paypal
Seller's business information
Buchmarie
Germany
Right of withdrawal
If you are a consumer you can withdraw from the contract in accordance with the following. Consumer means any natural person who is acting for purposes which are outside his trade, business, craft or profession.
Information regarding the right of withdrawal
Statutory right to withdraw
You have the right to withdraw from this contract within 14 days without giving any reason.
The withdrawal period will expire after 14 days from the day on which you acquire, or a third party other than the carrier and indicated by you acquires, physical possession of the last good or the last lot or piece.
To exercise the right of withdrawal, electronically fill in and submit a clear statement on our website, under "My Purchases" in "My Account". We will communicate to you an acknowledgement of receipt of such a withdrawal on a durable medium (e.g. by e-mail) without delay.
To meet the withdrawal deadline, it is sufficient for you to send your communication concerning your exercise of the right of withdrawal before the withdrawal period has expired.
Effects of withdrawal
If you withdraw from this contract, we will reimburse to you all payments received from you, including the costs of delivery (except for the supplementary costs arising if you chose a type of delivery other than the least expensive type of standard delivery offered by us).
We may make a deduction from the reimbursement for loss in value of any goods supplied, if the loss is the result of unnecessary handling by you.
We will make the reimbursement without undue delay, and not later than 14 days after the day on which we are informed about your decision to withdraw from this contract.
We will make the reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise; in any event, you will not incur any fees as a result of such reimbursement.
We may withhold reimbursement until we have received the goods back, or you have supplied evidence of having sent back the goods, whichever is the earliest.
You shall send back the goods or hand them over to Buchmarie, Darmstadt, Germany, without undue delay and in any event not later than 14 days from the day on which you communicate your withdrawal from this contract to us. The deadline is met if you send back the goods before the period of 14 days has expired. You will have to bear the direct cost of returning the goods. You are only liable for any diminished value of the goods resulting from the handling other than what is necessary to establish the nature, characteristics and functioning of the goods.
Exceptions to the right of withdrawal
The right of withdrawal does not apply to:
- The delivery of newspapers, journals or magazines with the exception of subscription contracts; and
- The supply of digital content which is not supplied on a tangible medium (e.g. on a CD or DVD) if you accepted when you placed your order that we could start to deliver it, and that you could not withdraw once delivery had started.