Looks like the deal is not quite done yet; Siemens and Gores Group have formed another company that aims to get back in the deal:
Reuters story

Some Key points from the article:
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A joint venture of private equity firm Gores Group and Germany's Siemens AG (SIEGn.DE) said on Wednesday it is pushing to submit a bid to acquire the enterprise solutions business of bankrupt Canadian telecom equipment maker Nortel Networks (NRTLQ.PK)
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The venture is called Enterprise Networks Holdings
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ENH has filed a limited objection to the proposed bidding procedures
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It said the procedures have several provisions that not only give Avaya an unfair advantage
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Any competing bids will have to exceed Avaya's offer.
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In a separate court filing, Nortel creditor MatlinPatterson has also made a limited objection to the bidding process for Nortel's enterprise unit.
Steve