asterisk users - Jun 2006 - Any ideas why I can't dial this SIP phone (sometimes)?

Can anyone offer any insights as to why with one of these examples I
can do a dial to the sip hone, and with the other I can't?

DOESN'T WORK:
    -- Executing Dial("SIP/109-d35d", "SIP/101|5|tr") in new
stack
    -- Called 101
    -- SIP/101-c9ff is ringing
    -- Nobody picked up in 5000 ms
    -- Executing SetCallerID("SIP/109-d35d", "Xfer Andrew
<109>") in new stack
    -- Executing Dial("SIP/109-d35d", "SIP/116|30|tr") in
new stack
    -- Called 116
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Executing Goto("SIP/109-d35d", "andrewvm|1") in new
stack

WORKS:
-- Executing SetCallerID("SIP/109-5107", ""Xfer Andrew
VM" <109>") in new stack
    -- Executing Dial("SIP/109-5107", "SIP/116|30|tr") in
new stack


    In both cases, SIP/116 is on hook and available for calls.
The only thing different is in example one... before it rings
extention 116, it rings extention 101 for 5 seconds.

Matt wrote:
>
>    In both cases, SIP/116 is on hook and available for calls.
> The only thing different is in example one... before it rings
> extention 116, it rings extention 101 for 5 seconds.
I know this sounds silly, but you didn't miss anything in the log
stating that the handset had become unavailable in the meantime? (qualify)
That's the only time I've seen this. (Happens with cheaper handsets,
removing the qualify like from the channel fixes it).