PDF] Comparison of online charging mechanisms for SIP services A Ahmed, S Khattab, K Mostafa, S El-Gamal - Int J Electric Comput Sci …, 2010 - Citeseer

Citation:
A Ahmed, S Khattab, M. E. - G. K. S., "PDF] Comparison of online charging mechanisms for SIP services A Ahmed, S Khattab, K Mostafa, S El-Gamal - Int J Electric Comput Sci …, 2010 - Citeseer", Int J Electric Comput Sci …, , 2010.
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