asterisk users - Dec 2005 - asterisk won't answer malformed caller id

Hello,

Hopefully someone can advise me on the last problem I have in my config.

Among my trunks I have an spa-3000 with the pstn connected to an
ata-186 that I am trying to bring into asterisk.  All works perfectly
except apparently when I receive a malformed caller id from this
outside service like below.  There is no closing quote on this caller
id and that's apparently the way it's passed in from the ata-186 to
the spa-3000.

Asterisk will just not answer this call apparently.  Is there any
mechanism for asterisk to deal with this?

Dec  5 11:14:41 WARNING[8118] chan_sip.c: No closing quote found in
'"WIRELESS CALLE
<sip:1xxxxxxxxxx@192.168.0.99>;tag=3957b3bfa5fe1a2o1'
Dec  5 11:14:41 WARNING[8118] chan_sip.c: Huh?  Not a SIP header
("WIRELESS CALLE
<sip:1xxxxxxxxxx@192.168.0.99>;tag=3957b3bfa5fe1a2o1)?

thanks for any help.