IAS Morphs into SIP Trunking

By Tom Cross

Technology Columnist

 

 

This free presentation produced and presented by TECHtionary.com is available in Adobe Flash (.swf), audio-only (.mp3), Apple Quicktime (.mov) and iPod/iPhone (.mv4) formats for download at: http://www.bizcastingonline.com/educate/media/podcasts/ until June 4 when it will be removed.

 

Here is the text portion of the presentation.

Integrated Access Devices (IADs) provide the service known as integrated access also known as converged access (“flex” services) a digital communications service which provides voice telephony connections as well as high speed data communications over the same T-1 circuit. While integrated access service has been around for more than five years, new dynamic bandwidth and other capabilities are now available. While the difference between integrated and converged access is often more marketing than actual, integrated access usually refers to as fixed allocation of bandwidth. For example, the carrier would provide up to 50% of the bandwidth or 12 channels for telephone connections and the remainder or 768 kilobits per second for internet or wide area data networking.

 

With integrated/converged access, as shown here, bandwidth is not fixed but allocated based on need. Voice is prioritized for high quality of service or QoS. One carrier provides up to 10 high-quality and up to 40 low-quality voice calls with the remainder of the bandwidth available for data. This means if no one is the phone, the entire T-1 bandwidth is available for data communications. In addition, VoIP, SIP and other features are available depending on specific carrier offerings.

 

One of the many types of SIP Trunking will be using current Integrated Access Service (IAS) also known as Converged Access Service (CAS) to support SIP signaling. That is, the provider Session Border Controller (SBC) would act as a SIP Proxy server to support SIP User Agent Client (UAC) devices, Microsoft (News - Alert) OCS, softphone clients, analog and other signaling protocols such as FAX and T.38 FAX. QoS is also supported in the LAN via 802.1p/q and on the WAN Differentiated Services Code Points (DSCP) or separate Multi-Protocol Label Switching (MPLS). In addition, SIP trunking will be offered via metro/gigabit Ethernet. Among the many providers of this technology is Nortel (News - Alert) with the CS2100.

 

 

This information is included in online/onsite courses SIP 2.0c and $499 for OCS-101 Office Communications Server per person (volume and site license discounts available). Discounts are also available to members of the SIP Forum and MS Partners for $99 per student during May.

 

Courses are free to channel partners – see terms and conditions at http://www.techtionary.com/techu/.

 

For customizing, special discounts, website animations, technical/sales training, technical writing and other services, go to http://www.techtionary.com or please call Tom Cross (News - Alert) at 303-594-1694 or [email protected].

 

This is also included in TMC University special course on Microsoft OCS-Office Communications Server at ITEXPO (News - Alert).com. For more go here: http://www.tmcnet.com/voip/conference/west-08/tmc-university-microsoft-ocs.htm

 

If you are a planner, provider, channel partner, or interested party in Microsoft’s ResponsePoint or OCS, you are invited to join this new Yahoo Group. To join, click here.

 

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