I have some phones that beep every time they receive a NOTIFY message with the voicemail information, even if there are no new messages, like this one:
NOTIFY sip:1000@xxxxxxxxxx;transport=udp SIP/2.0
Via: SIP/2.0/UDP xxxxxxxxxx;branch=z9hG4bK227ff72f;rport
Max-Forwards: 70
From: "Unknown" <sip:Unknown@xxxxxxxxxx>;tag=as5c8cbfb6
To: <sip:1000@xxxxxxxxxx;transport=udp>
Contact: <sip:Unknown@xxxxxxxxxx>
Call-ID: 4717060a0ed0a90b3a7e84b157bb54cc@xxxxxxxxxx
CSeq: 102 NOTIFY
User-Agent: FPBX-13.0.131(13.7.2)
Event: message-summary
Content-Type: application/simple-message-summary
Content-Length: 88
Messages-Waiting: no
Message-Account: sip:*97@xxxxxxxxxx
Voice-Message: 0/0 (0/0)
These messages are sent after every REGISTER from the phone, and the only way to avoid the NOTIFY messages is configuring the extension with a blank «mailbox» parameter.
I’ve tried to put a blank space as suggested on another thread («Remove “mailbox=…” line for a single extension», sorry I can’t insert links) with no luck, the mailbox is filled automatically with 1000@device. Also tried the sip_custom_post.conf method with:
[1000](-)
mailbox=1000@device
And even with:
[1000]
mailbox=
With no help. Is there any way to remove the mailbox parameter for a single extension?
Thanks for your help.