How would we remove quotes from SIP name

We are using the FreePBX distro and right now the SIP name (cnam info) is always sent in quotes e.g. “6049888400” or “James Brown”. This is causing an issue because we can’t use the SIP name to lookup our customer.

Is there any way to remove the quotes from the SIP name?

[2011-08-11 08:35:25] VERBOSE[30874] chan_sip.c:
<— SIP read from UDP: —>
INVITE sip:[email protected] SIP/2.0
Call-ID: [email protected]
CSeq: 102 INVITE
From: “James Brown” sip:[email protected] ;tag=88971