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It seems that Sean Egan, software engineer at Google Talk, has been working together with Peter Saint-Andre to create JEP-0181: Jingle DTMF.

Quote:

Traditional telephony systems use Dual Tone Multi-Frequency (DTMF) for dialing and to issue commands such as those used in Interactive Voice Response (IVR) applications. Internet telephony systems also use DTMF tones for interoperability with the public switched telephone network (PSTN). XMPP clients that use Jingle [1] for voice chat (see Jingle Audio Content Description Format [2]) MUST use the protocol described in this document if they wish to support DTMF.

Does this mean they are working on PC to Phone connectivity?

Also Peter Saint-Andre has been working with Milton Chen to create JEP-0180: Jingle Video Content Description Format

Quote:

Jingle [1] can be used to initiate and negotiate a wide range of peer-to-peer sessions. One session type of interest is video exchange. This document specifies a format for describing Jingle video sessions.

Next, Google Talk engineers have created JEP-0176: Jingle ICE Transport

Quote:

Jingle [1] defines a framework for negotiating and managing out-of-band data sessions over XMPP. In order to provide a flexible framework, the base Jingle specification defines neither data transport methods nor content (session) types, leaving that up to separate specifications. The current document defines a transport method for establishing and managing data connections between XMPP entities, using the Interactive Connectivity Establishment (ICE) methodology currently being developed within the IETF (see Interactive Connectivity Establishment (ICE) [2]).

Wikipedia says:

Quote:

The Interactive Connectivity Establishment (ICE) draft, developed by the IETF's MMUSIC working group, provides a mechanism for NAT traversal, using various techniques. In particular, it is used to allow SIP-based VoIP clients to successfully traverse the variety of firewalls that may exist between a remote user and a network. It is also used by the Jingle extension to XMPP.

And finally, Google Talk engineers have created JEP-0177: Jingle Raw UDP Transport

Quote:

Jingle [1] defines a framework for negotiating and managing out-of-band data sessions over XMPP. In order to provide a flexible framework, the base Jingle specification defines neither data transport methods nor content (session) types, leaving that up to separate specifications. The current document defines a transport method for establishing and managing data between XMPP entities using a raw User Datagram Protocol (UDP) connection (see RFC 768 [2]).

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