Jinghui Guo e30d4bf531 Fix the issue of new call failing in 3-way call scenario.
The issue this change fixes can be reproduced by:
1. place an MO call;
2. place the second MO call;
3. hangup from the other end for one of the calls so there is only
   one call connected;
4. try to place another call.
This issue is that the new call would fail.
2009-07-27 14:03:27 -07:00
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