Columbia VoIP Testbed

Overview

Architecture

SIP End Clients

Interoperability

   Home   |   Eyebeam   |   WengoPhone   |   Express Talk   |   Polycom   |   Cisco   |   Grandstream |   Snom |

 

Study of SIP clients

 

End-clients being evaluated -

 

SIP hard-phones

·         Cisco IP Pone 7960

·         Linksys SPA 941

·         Grandstream GXP-2000

·         Grandstream GXV-3000

·         Polycom SoundPoint IP 600

·         3com 3102

·         Avaya One-X deskphone 4624

·         PingTel Xpressa

·         Snom 320

·         D-link DPH 540 Wi-Fi

·         Nokia N80

 

SIP soft-phones

·         Columbia sipc

·         CounterPath Eyebeam

·         Express Talk

·         Avaya One-X

·         Microsoft Messenger

·         SIP Communicator

·         OpenWengo

·         Ekiga

·         Mozilla Zap

·         SJphone

 

Characteristics of the SIP end-clients under consideration -

 

Basic features

·         Configuration (manual, automatic or both)

·         Number of phone lines (number of "lines")

·         Cost (licensed or available under GPL)

·         Support for Do-not-disturb

·         Support for Call hold, Call forward and Call recording

 

Advanced features

·         Platform/Operating system

·         Signaling over TCP

·         Audio and video codecs supported

·         DNS queries supported

·         Support for priority calls (emergency) and Tel URI

·         Support for Silence suppression

·         Support for NAT traversal

o        STUN, TURN, ICE, symmetric signaling/RTP

·         Security

o        Encryption and authentication support

o        Performance against SIP torture tests

o        SIP over TLS