Carrier Grade Voice Over IP; second edition – 9780071406345, paperback, Collins
Author: Collins, Daniel. Carrier Grade Voice Over IP (second edition). Release Date: 2002-09-17. Sku: 0071406344-3-33036859. Condition: Used: Good. Qty Available: 1.
Author: Collins, Daniel. Carrier Grade Voice Over IP (second edition). Release Date: 2002-09-17. Sku: 0071406344-3-33036859. Condition: Used: Good. Qty Available: 1.