IP Office Technical Bulletin number 145
COMPAS ID 157236 Issue 2
Page 46 of 59
Line status mechanisms
Some Service Provider implementations utilize registration to maintain the status of
lines instead of OPTIONS.
In IP Office 8.0, OPTIONS requests are sent to regularly check if the SIP Line is in
service. With R8.1, it will now be possible to send frequent REGISTER requests to
keep the line in service rather than using OPTIONS.
Fax G711 pass through mode including SG3
Super G3 fax machines utilize higher speeds than normal G3 or earlier fax machines.
In order to broaden IP Office fax support, R8.1 will now support Super G3 fax
transmission.
IP Office 7.0 added Fax Transport support for sending and receiving of faxes over
G.711. IP Office, will now detect fax tones in G.711 calls between Super G3 fax
machines.
Nonce caching for proactive inserting of SIP credentials in outgoing SIP
requests
Currently, IP Office sends the Authorization/Proxy-Authorization only if the network
specifically requests this for one IP Office request. In R8.1, IP Office will now cache
the nonce received with the challenge or with the Authentication-Info header. IP
Office will use the information for proactively inserting the SIP credentials in all the
outgoing SIP messages.
The support of nonce caching will speed authentication, reduce network signaling
traffic, and improve the efficiency of message handling by IP Office.
All outgoing SIP requests may be authenticated by SIP network with the
exception of Cancel method
IP Office will now support additional levels of authentication by broadening the scope
of message types that the IP Office will respond to.
All methods shall support presence of (proxy)-authorization headers except Cancel
(RFC compliance). For short term, Invite, Re-Invite, Update, BYE shall support the
presence of such headers. Before the introduction of these changes, IP Office did not
support challenges for Update message.
Template support for new features included in SIP Trunk
Each of the new Manager configuration settings have been added to SIP Line
templates in IPO 8.1.