Product Description
IP Office 8.1
© 2012 AVAYA All rights reserved.
Page 281
Issue 26.k.- (16 August 2012)
E1R2 Channel Associated Signaling
Provided by the IP400 PRI E1R2 and IP500 Universal PRI cards.
The IP400 PRI E1R2 cards are available in two versions supporting either RJ45 or coax network connections.
Each card provides channels that can be configured for MFC, Pulse or DTMF dialing dependent on the
requirements of the network.
Session Initiation Protocol (SIP)
IP Office supports SIP trunking. SIP trunks allow IP Office users to take advantage of new telephony services
being offered by ‘Internet Telephony Service Providers (ITSPs)’. In many cases, these telephony services can
offer substantial savings in comparison to traditional exchange lines. The IP Office solution allows all users,
regardless of their phone type, to make and receive SIP calls. SIP trunks are handled like any other line on IP
Office, affording all the call routing and toll control needed to manage inbound and outbound calls.
SIP trunks on IP Office require the provisioning of voice compression channels through the installation of VCM
modules within the control unit. A license for the maximum required number of simultaneous SIP calls is also
needed. Up to 128 simultaneous calls are supported.
IP Office also supports the T38 protocol which allows Fax over IP.
There are several possible network topologies for SIP trunk systems, as shown in the following diagrams.
Option 1: Service provider with a Session Border Controller (SBC) - this is the preferred and recommended
reference architecture for IP Office.
Option 2: Direct connection from the IP Office’s second Ethernet port to the internet via a DMZ (demilitarized
zone) port on the router. To make this configuration secure, the IP Office firewall is set to drop all packets
except SIP.
Содержание IP Office 8.1
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