| Siemens Enterprise Communications IP- OpenStage 5 21.07.2011 Siemens Enterprise Communications OpenStage 5, , . OpenStage, SIP-... » |
| Siemens - 09.03.2011 Siemens Enterprise Communications (SEN) 2011 . - , , CNews (Wolfram Fisher), - EMEA SEN. -... » |
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