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Appendix A Product Specifications
V660 User’s Guide
163
The following list, which is not exhaustive, illustrates the standards supported in the V660.
Echo Cancellation You device supports G.168, an ITU-T standard for eliminating the echo
caused by the sound of your voice reverberating in the telephone
receiver while you talk.
QoS (Quality of Service) Quality of Service (QoS) mechanisms help to provide better service on a
per-flow basis. Your device supports Type of Service (ToS) tagging. This
allows the device to tag voice frames so they can be prioritized over the
network.
Voice Codecs G.711a/u, G.723.1A, G.726 (16/24/32/40), G.729a/b
DTMF In-band and out-of band PCM, RFC2833, SIP Info
Ring File Management Upload and download MIDI (.mid) ringtone files to and from the V660.
Table 22 Standards Supported
STANDARD DESCRIPTION
RFC 1112 IGMP v1
RFC 1157 SNMPv1: Simple Network Management Protocol version 1
RFC 1321 The MD5 Message-Digest Algorithm
RFC 1441 SNMPv2 Simple Network Management Protocol version 2
RFC 1631 IP Network Address Translator (NAT)
RFC 1661 The Point-to-Point Protocol (PPP)
RFC 1723 RIP-2 (Routing Information Protocol)
RFC 1890 RTP Profile for Audio and Video Conferences with Minimal Control
RFC 1901 SNMPv2c Simple Network Management Protocol version 2c
RFC 2236 Internet Group Management Protocol, Version 2.
RFC 2327 SDP: Session Description Protocol.
RFC 2408 Internet Security Association and Key Management Protocol (ISAKMP)
RFC 2516 A Method for Transmitting PPP Over Ethernet (PPPoE)
RFC 2617 HTTP Authentication: Basic and Digest Access Authentication
RFC 2766 Network Address Translation - Protocol
RFC 2833 RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals
RFC 3261 SIP: Session Initiation Protocol. (Updated by RFC3265, RFC3853)
RFC 3264 An Offer/Answer Model with Session Description Protocol (SDP)
RFC 3515 The Session Initiation Protocol (SIP) Refer Method.
RFC 3550 RTP: A Transport Protocol for Real-Time Applications.
RFC 3665 Session Initiation Protocol (SIP) Basic Call Flow Examples
RFC 3891 The Session Initiation Protocol (SIP) "Replaces" Header
RFC 3892 The Session Initiation Protocol (SIP) Referred-By Mechanism. R.
RFC 4028 Session Timers in the Session Initiation Protocol (SIP)
ITU Q.23 Dual-Tone Multi-Frequency signaling (DTMF)
Table 21 Firmware Specifications
FEATURE DESCRIPTION