400HD IP Phones Series - Teams Compatible
Administrator's Manual 66 Document #: LTRT-09960
3.4.3 Configuring an Outbound Proxy
Microsoft Skype for Business Server Multitenant Hosting Pack is a Microsoft® Unified
Communications (UC) hosting solution for telecommunications and hosting providers. The
solution enables Microsoft hosting partners to deploy a single instance of the Skype for
Business Server software to securely and economically host multiple tenants with a rich, fully
integrated UC solution. To connect the AudioCodes Skype for Business-compatible phone
to a hosted Skype for Business environment, a dedicated 'Outbound Proxy' parameter is
available which is used to configure the hosted service provider's domain name (FQDN).
Note: In hosted environments, it's common practice that this hosted domain name is
different to the enterprise's domain name.
To configure a phone for an LHP environment, configure the address of the Outbound Proxy
as the hosted service provider's domain name (FQDN).
To configure:
• Open the Configuration File page (Management tab > Manual Update >
Configuration File) and use the table below as reference.
Table 3-18: Proxy and Registrar Parameters
Parameter Description
voip/signalling/sip/sip_outbound_proxy/enabled
Determines whether an outbound proxy
server is used (all SIP messages are sent to
this server as the first hop).
[0] Disable (default)
[1] Enable
voip/signalling/sip/sip_outbound_proxy/addr
Displayed when the 'Use Hosting Outbound
Proxy' parameter is enabled. Defines the IP
address of the outbound proxy. If set, all
outgoing messages (including Registration
messages) are sent to this Proxy according
to the Stack behavior.
voip/signalling/sip/sip_outbound_proxy/port
Displayed when the 'Use Hosting Outbound
Proxy' parameter is enabled.
Defines the port on which the outbound proxy
listens. Range: 1024 to 65535. Default: 5060.
3.4.4 Configuring IP Phone Office 365 Services via HTTP Proxy
Support
Network administrators can configure One Voice Resiliency (OVR) IP phones to forward
Office 365 services via an OVR embedded reverse proxy, to comply with enterprise security
policy. The phone then forwards Office 365 HTTP services designated to port 80/443 (TLS),
to AudioCodes' HTTP reverse proxy embedded within the OVR, instead of to the original
destination (origin server), similarly to the way in which the phone directs SIP traffic to the
OVR instead of directly to Office 365 SIP servers.
Two main components comprise the solution:
IP phone: Responsible for directing Office 365 HTTP/S client traffic towards the
trusted AudioCodes HTTP reverse proxy embedded within the OVR
OVR + HTTP Reverse Proxy (server) responsible for forwarding the requests to the
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