Networking/IPv6

At the moment, snom m9 is the only snom phone that supports IPv6.

snom is striving to get IPv6 support on the snom 7xx and snom 8xx series. Our development team is working at this as we speak, and we hope to have the implementation available for beta testing at the beginning of 2013.

Unfortunately, snom 3xx phones cannot support IPv6. Some support was present in older versions, but the most recent releases will not work at all with IPv6.

IPv6 on snom m9

The snom m9 natively supports IPv6 for SIP. Please see the configuration and usage details here

Using IPv6

Note: currently not supported, see the beginning of this article

In order to use the IPv6 mode, you need to go to the advanced settings and turn the DHCP flag off. You must enter the IPv6 address of the phone; the netmask must remain empty.

You should also specify the address of an IPv6-enabled DNS server. The phone will use this server for requesting DNS entries. Please note that in many networks, the DNS server has the IP address FEC0:0:0:FFFF::1.

You should also enter the address of the NTP server. This can be a IPv6 address or a DNS name. If you are using DNS, then the AAAA record for that address must be available for the phone.

You may also automatically provision the phone from a plug and play server. Again, if you are using DNS, then the AAAA record for that address must be available for the phone. Otherwise, just enter the IPv6 address. If the PnP server provides a URL for the firmware, that URL must be downloadable via IPv6.

After saving the setting, you must reboot the device.

Examples

Registration

The following picture shows a example registration:

The phone registeres to the PBX using the following packet:

Sent to tls:[db8:2001::1111]:5061 at 12/3/2009 14:28:53:904 (663 bytes):

REGISTER sip:localhost SIP/2.0
Via: SIP/2.0/TLS [db8:2001::1234]:2104;branch=z9hG4bK-msedi11d9umw;rport
From: "Fourty One" <sip:41@localhost>;tag=urd4jzz71y
To: "Fourty One" <sip:41@localhost>
Call-ID: 3c267032a943-tdhybir44kpf
CSeq: 69 REGISTER
Max-Forwards: 70
Contact: <sip:41@[db8:2001::1234]:2104;transport=tls;line=9ymq1yxy>;reg-id=1;q=1.0;+sip.instance="<urn:uuid:d23b1156-bf4b-4c98-a2e9-22c29c730b78>"
User-Agent: snom320/7.3.17
Supported: gruu
Allow-Events: dialog
WWW-Contact: <http://[db8:2001::1234]:80>
WWW-Contact: <https://[db8:2001::1234]:443>
Expires: 3600
Content-Length: 0

--------------------------------------------------------------------------------
Received from tls:[db8:2001::1111]:5061 at 12/3/2009 14:28:54:126 (358 bytes): 

SIP/2.0 200 Ok
Via: SIP/2.0/TLS [db8:2001::1234]:2104;branch=z9hG4bK-msedi11d9umw;rport=2104
From: "Fourty One" <sip:41@localhost>;tag=urd4jzz71y
To: "Fourty One" <sip:41@localhost>;tag=9ec5751666
Call-ID: 3c267032a943-tdhybir44kpf
CSeq: 69 REGISTER
Contact: <sip:41@[db8:2001::1234]:2104;transport=tls;line=9ymq1yxy>;expires=180
Content-Length: 0

Call Setup

The following packet shows a sample call setup from the phone:

Sent to tls:[db8:2001::1111]:5061 at 12/3/2009 14:24:16:624 (1200 bytes):

INVITE sip:*97@localhost;user=phone SIP/2.0
Via: SIP/2.0/TLS [db8:2001::1234]:2104;branch=z9hG4bK-65bzorhpnsr1;rport
From: "Fourty One" <sip:41@localhost>;tag=kpzs274ee2
To: <sip:*97@localhost;user=phone>
Call-ID: 3c268729f0e1-8gyhtp3c3g5k
CSeq: 1 INVITE
Max-Forwards: 70
Contact: <sip:41@[db8:2001::1234]:2104;transport=tls;line=9ymq1yxy>;reg-id=1
P-Key-Flags: keys="3"
User-Agent: snom320/7.3.17
Accept: application/sdp
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, SUBSCRIBE, PRACK, MESSAGE, INFO
Allow-Events: talk, hold, refer, call-info
Supported: timer, 100rel, replaces, from-change
Session-Expires: 3600;refresher=uas
Min-SE: 90
Proxy-Require: buttons
Content-Type: application/sdp
Content-Length: 456

v=0
o=root 2033607819 2033607819 IN IP6 db8:2001::1234
s=call
c=IN IP6 db8:2001::1234
t=0 0
m=audio 54132 RTP/AVP 9 0 8 2 3 18 4 101
a=crypto:1 AES_CM_128_HMAC_SHA1_32 inline:+f3gkFVsx3C6ThDfVezOQHphyyYW8u/3w/J7toPj
a=rtpmap:9 g722/8000
a=rtpmap:0 pcmu/8000
a=rtpmap:8 pcma/8000
a=rtpmap:2 g726-32/8000
a=rtpmap:3 gsm/8000
a=rtpmap:18 g729/8000
a=rtpmap:4 g723/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=sendrecv
--------------------------------------------------------------------------------
Received from tls:[db8:2001::1111]:5061 at 12/3/2009 14:24:16:761 (277 bytes):

SIP/2.0 100 Trying
Via: SIP/2.0/TLS [db8:2001::1234]:2104;branch=z9hG4bK-65bzorhpnsr1;rport=2104
From: "Fourty One" <sip:41@localhost>;tag=kpzs274ee2
To: <sip:*97@localhost;user=phone>;tag=e5b32bdb34
Call-ID: 3c268729f0e1-8gyhtp3c3g5k
CSeq: 1 INVITE
Content-Length: 0

--------------------------------------------------------------------------------
Received from tls:[db8:2001::1111]:5061 at 12/3/2009 14:24:19:506 (935 bytes):

SIP/2.0 200 Ok
Via: SIP/2.0/TLS [db8:2001::1234]:2104;branch=z9hG4bK-65bzorhpnsr1;rport=2104
From: "Fourty One" <sip:41@localhost>;tag=kpzs274ee2
To: <sip:*97@localhost;user=phone>;tag=e5b32bdb34
Call-ID: 3c268729f0e1-8gyhtp3c3g5k
CSeq: 1 INVITE
Contact: <sip:41@[db8:2001::1111]:5061;transport=tls>
Supported: 100rel, replaces, norefersub
Allow-Events: refer
Allow: INVITE, ACK, CANCEL, BYE, REFER, PRACK, INFO, UPDATE
Accept: application/sdp
User-Agent: pbxnsip-PBX/3.3.0.3160
Content-Type: application/sdp
Content-Length: 390

v=0
o=- 33925 33925 IN IP6 db8:2001::1111
s=-
c=IN IP6 db8:2001::1111
t=0 0
m=audio 62486 RTP/AVP 0 8 9 2 3 101
a=crypto:1 AES_CM_128_HMAC_SHA1_32 inline:NZ4VEY9odmXNPSf3Z9ccjFAdgDhRK7EYkomcMlYk
a=rtpmap:0 pcmu/8000
a=rtpmap:8 pcma/8000
a=rtpmap:9 g722/8000
a=rtpmap:2 g726-32/8000
a=rtpmap:3 gsm/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20
a=sendrecv
--------------------------------------------------------------------------------
Sent to tls:[db8:2001::1111]:5061 at 12/3/2009 14:24:19:551 (425 bytes):

ACK sip:41@[db8:2001::1111]:5061;transport=tls SIP/2.0
Via: SIP/2.0/TLS [db8:2001::1234]:2104;branch=z9hG4bK-jmoetvtpqtjx;rport
From: "Fourty One" <sip:41@localhost>;tag=kpzs274ee2
To: <sip:*97@localhost;user=phone>;tag=e5b32bdb34
Call-ID: 3c268729f0e1-8gyhtp3c3g5k
CSeq: 1 ACK
Max-Forwards: 70
Contact: <sip:41@[db8:2001::1234]:2104;transport=tls;line=9ymq1yxy>;reg-id=1
Proxy-Require: buttons
Content-Length: 0

IPv6 on the PC port

Even if your phone is using an IPv4 address, you can connect a IPv6 host on the PC port. The phone acts only as a switch from PC to NET port. This means that if the host sends IPv6 packets to the phone on the PC port, the packets are sent further through the NET port of the phone, with no change to the IP headers.

Interoperability

So far, the interoperability of the IPv6 implementation has been shown with Asterisk-based (see http://www.asteriskv6.org) systems and pbxnsip (http://www.pbxnsip.com/ipv6).