Free Whitepapers
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Enterprise Applications of Sangoma Vega Media Gateways
Branch Offices
SIP Trunking
PSTN Trunking
Hospitality -
Mobile Value-Added Services with Sangoma
Open source telephony platforms can deliver low-cost solutions for the lucrative Mobile Value Added Services market.
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Effectively Bridging Lync and Legacy Communication Nodes in a Mixed Environment
Facilitate the migration from legacy through hybrid, to a fully Lync-optimized environment.
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Contact Center Doubles Capacity and Expands Services
Increased Efficiency with VICIdial Call Center Platform and Sangoma Call Analyzer.
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Increasing the Density of Asterisk systems by 300%
Asterisk can run up to forty-eight spans of Digital Telephony (1,440 simultaneous calls) without overloading the CPU.
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VoIP Resiliency, Security and Availability
An Analysis of VoIP Networks, their Vulnerabilities and the Impact of VoIP Technology on Emergency Call Handling.
freetdm-sip-x-headers
Q. What values are included when I enable "sip-headers" in freetdm.conf.xml
A. The following values are inserted as SIP-X headers:
| SIP-X Header Name | Description |
| X-FreeTDM-SpanName | FreeTDM span name value |
| X-FreeTDM-SpanNumber | FreeTDM span number value |
| X-FreeTDM-ChanNumber | FreeTDM channel number |
| X-FreeTDM-CallerName | Caller-Id Name value |
| X-FreeTDM-CallerNumber | Caller-Id Number value |
| X-FreeTDM-ANI | ANI value |
| X-FreeTDM-ANI-TON | ANI Type of Number |
| X-FreeTDM-ANI-Plan | ANI Number Plan |
| X-FreeTDM-ANI-NADI | ANI Nature of Address Indicator |
| X-FreeTDM-ANI2 | ANI2 value |
| X-FreeTDM-DNIS | DNIS value |
| X-FreeTDM-DNIS-TON | DNIS Type of Number |
| X-FreeTDM-DNIS-Plan | DNIS Number Plan |
| X-FreeTDM-DNIS-NADI | DNIS Nature of Address Indicator |
| X-FreeTDM-RDNIS | Redirected DNIS |
| X-FreeTDM-RDNIS-TON | Redirected DNIS Type of Number |
| X-FreeTDM-RDNIS-Plan | Redirected DNIS Number Plan |
| X-FreeTDM-RDNIS-NADI | Redirected DNIS Nature of Address Indicator |
| X-FreeTDM-RDNIS-Screen | RDNIS Screening Value |
| X-FreeTDM-RDNIS-Presentation | Rdnis Presentation Value |
| X-FreeTDM-GN | Generic Number |
| X-FreeTDM-GN-NumQual | Generic Number Number Qualifier |
| X-FreeTDM-GN-NADI | Generic Number Nature of Address Indicators |
| X-FreeTDM-GN-Screen | Generic Number Screening Value |
| X-FreeTDM-GN-Presentation | Generic Number Presentation Value |
| X-FreeTDM-GN-Plan | Generic Number Number Plan |
| X-FreeTDM-GN-NumInComp | Generic Number - Number Incomplete Indicator |
| X-FreeTDM-Screen | Caller-Id Screening Value |
| X-FreeTDM-Presentation | Caller-Id Presentation value |
| X-FreeTDM-CPC | Calling Party Category |
| X-FreeTDM-IAM | Transparent IAM string presentation |