VoIP

Voice over Internet Protocol (VoIP) is a means of transmitting voice calls over a packet-based transmission network. It uses SIP, H.323, or BICC as a signaling/control protocol.

TelcoBridges and VoIP

TelcoBridges' Tmedia and Tdev families of devices support VoIP via the SIP signaling protocol as well as via dedicated on-board hardware. This hardware is optional and can be configured at initial purchase or added later via mezzanine board upgrades.

At this time, TelcoBridges does not support VoIP signaling via the H.323 or BICC control protocols.

Supported VOIP RFCs

TelcoBridges supports the following RFCs for VoIP:

SIP

• RFC 3261 Session Initiate Protocol
• RFC 2976 SIP INFO Method
• RFC 3398 ISUP-SIP Mapping
• RFC 3515 Refer Method
• RFC 3578 Overlap
• RFC 2327 Session Description Protocol
• RFC 3581 An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing
• RFC 3665 Session Initiation Protocol (SIP) Basic Call Flow Examples
• RFC 3666 Public Switched Telephone Network (PSTN) Call Flows
• RFC 3892 Referred-By Mechanism
• RFC 3891 "Replaces" Header

SIP-T

• RFC 3372 Session Initiation Protocol for Telephones (SIP-T)

SIP-I

• ITU Q.1912 for ISUP/C7-to-SIP inter working

References

• Wikipedia article