PBX systems for IP telephony
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| Main Author: | |
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| Format: | Book |
| Published: |
New York
McGraw Hill
2002
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| Subjects: | |
| Online Access: | Click Here to View Status and Holdings. |
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Add Tag | Item Description: | Includes index |
|---|---|
| Physical Description: | viii, 487 p. ill. 26 cm |
| ISBN: | 0071375686 |
The road to IP telephony how cisco systems migrated from PBX to IP telephony