HP MSR SERIES User Manual

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Figure 657 Call setup procedures involving a proxy server
This is a simplified scenario where only one proxy server is involved and no registrar is present. However,
a complex scenario can involve multiple proxy servers and registrars.
Call redirection
When a SIP redirect server receives a session request, it sends back a response indicating the address of
the called SIP endpoint instead of forwarding the request. The calling and called endpoints therefore can
send request and response to each other directly. See Figure 658.

HP MSR SERIES Specifications

General

Product Series	MSR Series
Manufacturer	HP
Category	Network Router
Ports	Varies by model
WAN Interfaces	Varies by model
LAN Interfaces	Varies by model
VPN Support	Yes
Firewall	Yes
Dimensions	Varies by model
Weight	Varies by model
Wireless Support	Varies by model
Management	Web-based, CLI
Power Supply	Varies by model
Operating Temperature	0°C to 45°C
Storage Temperature	-40°C to 70°C
Humidity	5% to 95% non-condensing