 SIP interoperability We tested interoperability between vendor products and two “reference” products — a Pingtel xpressa SIP phone (user agent, or UA) and a dynamicsoft Session Management Suite SIP proxy server. The basic tests were mandatory; the advanced tests were optional. |
| Product | Basic Interoperability | Advanced Interoperability | |||
| SIP user agents | •
UA-to-UA direct call, no proxy server • UA-to-UA, through SIP proxy server • UA-to-analog-phone, through SIP proxy server |
Call transfer |
Conference calling |
Call forwarding |
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| Cisco ATA-186 telephony adapter |  |
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| Cisco 7960 SIP phone | |
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| Difinium Mercury | |
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| Indigo Software SIP User Agent | |
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| Mediatrix APA III-4FXS | |
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| CyberTel CyberCom Server Class | |
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| SIP proxy servers | •
UA-to-UA, through reference SIP proxy server • UA-to-UA, through multiple SIP proxy servers • UA-to-analog phone, through SIP-based PSTN gateways |
Transport
negotiation |
Sequential forking |
Parallel forking |
Loop detection |
| Indigo Proxy Server | |
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| Mockingbird SIP server | |
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| NetCentrix call control server | |
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| SS8 Signaling Switch | |
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| Vovida.org Vocal | |
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| SIP-to-PSTN gateways | •
UA-to-analog phone, through SIP proxy server • SIP/IP trunking, analog phone through PSTN gateways •PRI trunking, UA to UA through PSTN gateways |
Codec negotiation |
Transport negotiation (TCP-UDP) |
Fax support |
Reinvite method support |
| Cisco AS5350 Universal Gateway | |
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| Mediatrix APA III-4FXO |  |
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| Mockingbird Nuvostream multiprotocol server | |
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| Nuera ORCA GX-8 | |
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| Key Successful
interoperability
Not tested Not
supported |
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