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It has been a VERY long time since I worked on an M1 so this will be quite generic, but may spark someone else's memory. Are you seeing the digits/call go out of the Asterisk and arrive at the M1 intact? Does the Asterisk trunk on the M1 have the required privileges to make outgoing calls on...

I think you can just build the ATA and add the IP phone's DN to ATA Line 1.

You probably need to look at some sort of disconnect supervision setting on CUCM so that it signals to the far end of that carrier trunk that the call has ended and to disconnect it's end. What kind of trunk is this from the carrier? How is it handed off to CUCM? FXO/POTS line, Channelized...

Would you post a sanitized config here? Would you describe what you have the TA908e doing, and what is not working?

Maybe try disabling those DSPs and removing their corresponding agent DNs from the queue. That may at least get you access if you are hitting those two ports as the first two in the queue. Have you tried calling each agent/port DN directly to see if MM answers the other ports?

Get a DB25 to DB9 adapter for the tty0 port and any needed DB9 gender changer for your USB serial adapter.

Teletype no, haven't touched one in 30 years, and that was headed to the scrap bin after cleaning out an old storage room. Try looking for a TDD (Telecommunications Device for the Deaf) device, or better yet a transcription service that can integrate with Teams.

Check the I/O NTPs. Here is what I found over at PBX Cookbook, looms like it is a phone prompt as opposed to a LD 10 or LD 11 prompt. https://pbxbook.com/meridian/admin/modtelfea.html

Any phone system with a voicemail can do this. What you want to do is to program the phone as a "Hotline" or "Ringdown". You will set the destination to the extension of the Auto Attendant on your voicemail that you built with the menu. In Hotline aka Ringdown mode the phone will call the...

Does anyone know the pinout of the Miran III MC-8 Audio Adapter Part: A0870611? I have the ethernet connection working on VGR/VBR pairs, but am looking to connect to it on the serial port to do some initial configuration and hook up the Audio Input via a regular BIX strip. I have looked in to...

It is located on the card in Slot 1 and the amphenol that has ports 24-47. For the exact pair in the amphenol, see the installation guide. I would guess the pair could possibly be the YGR pair.

Yes, that should work fine. Another option would be to get a line simulator such as a Teltone TLS-5 which has 5 FXS ports, and programmable number plan and Caller-ID Name.

The UC520 is quite the antique at this point, End of Sale 2011, end of Support 2016. It is just Call Manager Express and Unity Express under the hood. Try doing a port scan win NMAP or ZenMAP (windows) of the subnet and see what answers, it should have an HTTPS port open for Call Manager and...

LD 32 and a few others https://pbxbook.com/meridian/maint/maint11.html edit: this brings back memories, been a VERY long time since I did M1.

The first one is a 6p4c "RJ-11" I think Suttle or Reliance used to make them, haven't used them in a very long time. Good for solid conductors. The second is a standard USOC 8p8c "biscuit" jack, again usually made by Suttle or Reliance or other Western Electric clone. This has 110 style...

It could either be a FXO (CO) port off of a Universal Trunk Card, or a FXS Port (Analog) off of an Analog Line Card. My first guess would be an FSX Analog port, put an analog phone on the lone going in to the 'Tel Line" port on the Amp, and call a digital set with a display, it will probably...

Second! for Adtran and EdgeMarc,did a lot of both back in my Tel/MSP days. For Adtrans' I usually deployed a TA900 series, for EdgeMarc a 4500 variant with DS1 ports.

I think 5.3.0.3 was the last release supported, it's been a few years since I updated my ERSs, and that Fw was a bit dated then. I am running Sw 5.7.3.03i and I think that is also the last release supported on the 4500s. I have a mix of Rev 3,5,6 and 12 and they are all on the same Fw and Sw.

Probably little demand for the 900MHz cordless, and/or limited quantities available. When I worked on ESI IVXs I usually used the FXS ports for cordless phones. A nice cheap cordless was easy to replace, or installed an EnGenious phone for long distance coverage.

703 and 571 overlay each other, it sounds like your listed main number (the business mane phone number) is in the 703 area codes so you don't need to dial a "1" to make calls within your local area. The system is probably treating the 571 area code as any other Toll call, you will probably have...