On 5/17/2025 1:34 PM, Michael Stock via vcf-midatlantic wrote:
Pardon me for asking, but I'm not aware of some of your acronyms. What is TDM, SIP, and CMG with respect to this discussion.
You've gotten my curiosity up, since I just heard that a local company here in the Dayton area has a pallet of Askersik phones that they are about to get rid of. Some are in original boxes that were never used.
I was thinking we should get 4 or 6 to keep for our local computer museum project.
Interesting discussion even though I have no experience in phone equipment.
Michael Stock, Vice-President, Dayton Microcomputer Association (DMA) mzstock@earthlink.net Trustee, Dayton Microcomputer Association, Inc. an 501(c)3 non-profit www.dma1.org
Michael, TDM (Time Division Multiplexing) Time Division Multiplexing (TDM) is a legacy method of transmitting multiple signals over a single communication channel by dividing the channel into distinct time slots, making best use of the empty spaces between other signals. In this case, a method to squeeze 23/24 calls onto two pairs of wire (T1) CMG (Customer Media Gateway) service card provides IP services like TDM-to-IP voice conversion and routing n the ADIT600 series equipment SIP (Session Initiation Protocol) is a specific protocol used to manage the establishment, maintenance, and termination of VoIP (Voice over Internet Protocol) telephone calls. Re the IP phones: Be aware that some are locked to a specific carrier, or cannot be used for SIP/VoIP without new firmware (looking at you Cisco!) Cheers, Martin