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[asterisk-admin at hulb...]

I've been having a problem with Asterisk MWI notification on my SIP
phones since going to version 1.4 a long time ago. Since going to this
version, I have needed to go into chan_sip.c and do the following:

/*! \brief Check whether peer needs a new MWI notification check */
static int does_peer_need_mwi(struct sip_peer *peer)
{
time_t t = time(NULL);

/* COMMENT OUT THIS CODE
if (ast_test_flag(&peer->flags[1], SIP_PAGE2_SUBSCRIBEMWIONLY) &&
!peer->mwipvt) {
peer->lastmsgcheck = t;
return FALSE;
}
*/

if (!ast_strlen_zero(peer->mailbox) && (t - peer->lastmsgcheck) >
global_mwitime)
return TRUE;

return FALSE;
}

After commenting out the section noted above then MWI works fine on all
phones. Now, I have moved to 1.6 and am having the same problem except
this function no longer exists. Has anyone had a similar problem and if
so, how did you fix it in your config files assuming it's some setting
in one of them? Does anyone know why this flag test is not working?
Also, if someone knows how I can patch 1.6 to fix this that would be
helpful also. I have the corresponding mailboxes set in my sip.conf
contexts as so:

[sipiura1]
...
mailbox=55 at default,66 at default,99 at default
subscribemwi=yes
...