User Interface
Single file quick installer (~10 MB)
No kernel drivers, no reboot needed
Simple interface, intuitive to the non-technical user
Resizable GUI
Web integration (click on a link to call)
Address Book with presence indication
Calls List (quick switch to All, Incoming, Outgoing, Missed)
Automatic Update over Internet
Extensive logging providing detailed user problem reports
Realtime graphical statistics for quick problem diagnosis
Support for multiple languages (English, Italian, German, Spanish)
Integrated GUI support for Mirial PSE.VAM Video Answering Machine
Call recording, playback and export in Windows Media Video (WMV)
format

Call Control
2 independent lines
Call hold and call transfer
3-party continuous presence multiconference without external
equipment

H.323
Compliant with ITU-T H.323v4, H.225v13
Call Control (H.450.2)
H.239 Presentation (up to 1280x768)
Far End Camera Control (H.224 + H.281)
Call party by E.164 number, H.323 Alias or IP (no Gatekeeper required)
Gatekeeper autodiscovery and automatic re-registration

SIP
RFC compliancy:
RFC-2396, RFC-2543, RFC-2617, RFC-2822, RFC-2833, RFC-2976, RFC-3260, RFC-3261, RFC-
3264, RFC-3265, RFC-3311, RFC-3420, RFC-3428, RFC-3515, RFC-3581, RFC-3550, RFC-3856,
RFC-3859, RFC-3860, RFC-3863, RFC-3891, RFC-3960, RFC-3984, RFC-4488, RFC-4961, RFC-
5168, draft-ietf-sip-183-00, draft-roach-mmusic-sip-provisional-media-00, draft-rosenbergimpp-
pidf-00, draft-ietf-sipping-cc-transfer-09

Support for DTLS-SRTP Media Encryption:
draft-ietf-sip-dtls-srtp-framework, draft-ietf-mmusic-sdp-capability-negotiation, draft-ietfavt-
dtls-srtp, RFC-4347 (Datagram TLS), RFC-3711 (SRTP)

Support for advanced SDP (RFC-4566) and extensions:
RFC-3984, RFC-4573, RFC-4587, RFC-4629, RFC-4796, RFC-4855
Both UDP and TCP transports, with configurable default
Support external Registrar and/or Proxy
Secure authentication: Digest (MD5), Kerberos, NTLM
Automatic caching of multiple credentials
Call party by SIP URI or IP/hostname (no Registrar or Proxy required)
Support dynamic codec/IP/port change for each negotiated medium
Send DTMF out-of-band as per RFC-2833, or in-band with any audio
codec
Presence events as per draft-rosenberg-impp-pidf-00 (X-PIDF)
RFC-3863 (PIDF)
Partial support for SOAP events (SERVICE method)
Video picture fast update as per draft “XML Schema For Media Control”
(INFO method)

Data, Application and Presentation
H.224 + H.281: Far End Camera Control (FECC)
Compliant with RFC-2326 (client only), RFC-2396, RFC-3550, draft-ietfmmusic-
rfc2326bis-18 (RTSP bis)
Session Description Protocol (SDP):
RFC-3555, RFC-3984, RFC-4566, RFC-4573, RFC-4587, RFC-4629, RFC-479, RFC-485, drafteven-
avt-h263-h261-options-00 (used for backwards compatibility)

H.239 presentation up to 1280x768 (emulated in SIP with RFC-4796):
• Multiple monitors support
• Transmit an application window or the entire desktop as a separate
realtime video stream (speaker live stream is still visible)
• 4x high-quality antialiasingVideo

Sharing mode when H.239 is not available:
• Use the standard video channel to send the presentation
instead of the speaker live stream
• Compatible with all endpoints supporting video calls

Audio
G.711 μ-law, A-law
G.723.1 6.3 and 5.3 Kbps:
• VAD (Voice Activity Detection)
• Low Pass Filter
G.722.1 Annex-C (Polycom® Siren14™, 32 KHz super wide-band)
Full duplex, high-quality Acoustic Echo Canceller
Full duplex Audio Denoise Filter with automatic noise level
detection

Video
H.264: 1080p, 720p, 4CIF, CIF, QCIF, SQCIF @ 30 fps max
• Up to 2 Mbps in High Definition (1920x1080)
• H.239 up to 2Mbps at WXGA resolution (1280x768)
• In-band dynamic video format changes
• Automatic “quality vs. CPU load” dynamic adjustment
H.263: 4CIF, CIF, QCIF, SQCIF @ 30 fps max
• Implemented annexes:
Annex-D (unrestrictedVector)
Annex-E (arithmeticCoding)
Annex-F (advancedPrediction)
• Half-Pel Motion Estimation
• TMN-9 rate control
• In-band dynamic video format changes
• Automatic “quality vs. CPU load” dynamic adjustment
H.263+ (adding the following features to H.263):

• Supported annexes:
Annex-I (advancedIntraCodingMode)
Annex-J (deblockingFilterMode)
Annex-S (alternateInterVLCMode)
Annex-T (modifiedQuantizationMode)
• RFC-4629 (ex RFC-2429) RTP media packetization
H.261: CIF, QCIF @ 30 fps max
• Up to 2 Mbps
• Loop-Filter
• Automatic “quality vs. CPU load” dynamic adjustment
Camera support:
• Standard webcams
• High-Definition webcams and HDMI capture boards at
resolutions up to 1920x1080
• PAL/NTSC DV cameras over Firewire IEEE-1394 (on Windows
XP or better only)
Video input aspect ratio is automatically detected and adjusted to
fit the output aspect ratio

Network and Quality of service (QOS)
Automatic bandwidth control, adaptive to network condition
Support asymmetric input/output bandwidths (e.g. ADSL), up to 2
Mbps RX + 2 Mbps TX
Configurable port ranges for signaling and media protocols
Static NAT support
Systems with multiple IP are supported
Automatic or manual IP address selection is available
Configurable DIFFSERV code

Minimum Requirements
Operating System:
• Windows 2000/XP/2003/Vista (including 64 bit versions), DirectX 9.0c or higher
• Mac OS X 10.5 Leopard or higher
P4@2.0Ghz (audio/high-res video calls)
Core 2 Duo class, 2.33 GHz (H264, 720p video calls)
Core 2 Quad class, 2.66 GHz (H264, 1080p video calls)
1GB Ram (2GB recommended on Vista) and 30Mb hard-disk space