[asterisk-users] TLS, SRTP, Asterisk11 and Snom870s

James B. Byrne byrnejb at harte-lyne.ca
Wed Mar 4 08:30:39 CST 2015

This seems to me to be getting down to some sort of problem with
configuring the Snom-870.

when I register the device 41712 (set up for transport=tls only) then
I see this in the SIP trace:

Sent to udp: at 4/3/2015 09:07:36:813 (836 bytes):

REGISTER sip:voinet09.internal.hamilton.harte-lyne.ca:5061 SIP/2.0
Via: SIP/2.0/UDP;branch=z9hG4bK-udx92poqese6;rport
From: "James B Byrne"
<sip:41712 at voinet09.internal.hamilton.harte-lyne.ca:5061>;tag=frgaimnglp
To: "James B Byrne"
<sip:41712 at voinet09.internal.hamilton.harte-lyne.ca:5061>
Call-ID: 710000004941-gk6y4evf6dci
Max-Forwards: 70
<sip:41712 at;line=0p8zx4sh>;reg-id=1;q=1.0;+sip.instance="<urn:uuid:ad1349a7-e08d-411b-83b0-000413281B56>";audio;mobility="fixed";duplex="full";description="snom870";actor="principal";events="dialog";methods="INVITE,ACK,CANCEL,BYE,REFER,OPTIONS,NOTIFY,SUBSCRIBE,PRACK,MESSAGE,INFO"
User-Agent: snom870/
Allow-Events: dialog
Supported: path, gruu
Expires: 3600
Content-Length: 0

The SNOM-870 is sending registration via UDP and not by TLS.  Is that
how things are supposed to work?  If only TLS is enabled in Asterisk
for that peer then evidently the peer cannot register.  But is
registration supposed to be done via TLS?  If so then how does one
configure the Snom to do so?

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James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited          http://www.harte-lyne.ca
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Hamilton, Ontario             fax: +1 905 561 0757
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