User's Manual 320 Document #: LTRT-42060
Mediant 2600 E-SBC
• Changes the SIP Contact header to the device's own address.
• Layer-3 topology hiding by modifying source IP address in the SIP IP header.
SIP normalization: The device supports SIP normalization, whereby the SBC
application can overcome interoperability problems between SIP user agents. This is
achieved by the following:
• Manipulation of SIP URI user and host parts.
• Connection to ITSP SIP trunks on behalf of an IP-PBX - the device can register
and utilize user and password to authenticate for the IP-PBX.
Survivability:
• Routing calls to alternative routes such as the PSTN.
• Routing calls between user agents in the local network using a dynamic database
(built according to registrations of SIP user agents).
Routing:
• IP-to-IP routing translations of SIP, UDP, TCP, TLS (when extensive transcoding
is not required).
• Load balancing and redundancy of SIP servers.
• Routing according to Request-URI\Specific IP address\Proxy\FQDN.
• Alternative routing.
• Routing between different Layer-3 networks (e.g., LAN and WAN).
Load balancing\redundancy of SIP servers.
ITSP accounts.
SIP URI user and host name manipulations.
Coder transcoding.
20.1 SIP Network Definitions
The device's SBC application can implement multiple SIP signaling and RTP (media)
interfaces.
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