Enterprise Telephony PBX Market Revenue Declines in 2Q13 as Emerging …

Although the process may take another decade to complete, the top eight vendors—Aastra, Alcatel-Lucent, Avaya, Cisco, Mitel, NEC, Shoretel, and Siemens—accounted for 80% of IP Line shipments during the quarter. Telephony Quarterly Report offers


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