Page 5-170
System Features
INTER-TEL
®
AXXESS
®
MANUAL VERSION 11.0 – May 2008
Peer-to-Peer Audio
20. PEER-TO-PEER AUDIO
20.1 The peer-to-peer (P2P) audio feature allows certain Internet Protocol (IP) and multi-
protocol, SIP or Inter-Tel Protocol (ITP), devices to transmit and receive audio directly with
each other. With this feature, the audio is not transmitted or received through the system chas-
sis. This reduces delay and removes the audio stream from the Time Division Multiplex
(TDM) highway.
20.2 P2P audio requires that you upgrade the IPRC and IP devices (IP phones and IP SLAs)
to firmware version 8.2 or later. In addition, each node that will use P2P audio must be running
software version 8.2 or later.
20.3 Devices that support P2P audio include:
• AudioCodes MP-114 or Quintum AFT 400 SIP gateway
• IP endpoints, except the IP SoftPhone
• SIP endpoints
A. USING P2P AUDIO
20.4 To use P2P audio, IP devices must be members of the same Network Group (see
page 6-182). In addition:
• The IPRC and IP devices must be upgraded to version 8.2 or later firmware. (SIP end-
points do not require firmware upgrades.)
• The devices must terminate on an IPRC with v8.2 or later firmware.
• There cannot be a NAT or firewall between the communicating devices.
• For SIP endpoints, the latest version of SIP Server (v1.1 or later) must be installed.
NOTE: For details about SIP Server and the associated endpoints, see the latest version of
the SIP Server Installation and Configuration Manual.
20.5 Because the devices are not using chassis resources, devices connected in a P2P call
cannot use the following features:
• Agent Help
• Record-A-Call
• Station Monitor
NOTE: The IP SoftPhone does not support v8.x or later firmware and cannot use P2P audio.
NOTICE
Passing real-time streaming data, such as audio, through encrypted virtual private networks
(VPNs) may significantly impact network performance, router and firewall functionality, and
audio quality.
CAUTION
Inter-Tel recommends that you run the Network Qualifier (for at least 24 hours) to determine
if the network meets the minimum requirements identified for P2P audio. These require-
ments are the same as those identified for IP private networking.
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