Tones/Alerting/"Selective Calling" on an 800 MHz system

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So here's my question:

We are setting up a new "station" in a system that is on 800mHz Motorola Smartnet II. I understand that we cannot use quickcall and pagers/pager tones on an 800 system, but is there anyway to program some other set of selective calling?

Here's the setup (which is open to change should anyone have a better idea):

There are two dispatching agencies that we will be dispatched through. The first is a high volume metropolitan dispatching system and the second is a low volume college campus dispatcher. The original plan was to have station tones play on the two frequencies and set up a Minitor V to monitor that, and then have a radio programmed to be able to talk to both dispatching agencies and their respective talkgroups. Then we discovered that pager tones are not possible on an 800mHz system.

The problem with setting up the station alerting is that these units will be special duty only, and where they stay when they are in service on a nightly basis changes based upon their duty assignment. During the day this is not an issue since everyone is awake and can monitor the radios, but at night, there are situations where we will need a crew on duty, but the anticipated call volume will be so low that we will allow them to take a nap between calls. Monitoring the metro dispatch is out of the question since they average at least 10 dispatches per hour even at night. Monitoring the campus dispatch is not as problematic since they have spare event talkgroups that can be used for this purpose so monitoring those TGs we'd only hear relevant calls.

The only workaround I can see is at night only to monitor the campus dispatch and have the dispatchers who are awake monitor the city talkgroup to listen for our numbers, but this puts more work on the dispatchers and I feel is also a very convoluted way to go about this. Unfortunately, my knowledge of radio systems is limited and I have not done much work with Digital systems to think of other solutions. Is there a way that anyone can see to make this easier?

Also, what I described is still not idea as there are certain events that we would cover where excess noise needs to be avoided so even during the day a pager like system where you only produce noise when absolutely necessary (or get a vibration so you can remove yourself from the quiet situation to hear the dispatch) is still more desirable.

To answer what I think will be a solution posed: yes we have looked at alphanumeric pagers, and no they are not a viable option at this time.

This isn't something that needs to be implemented tomorrow, we're still a few months away from becoming operational, but I figured since this is something that no one on my team here knows how to fix, it might be a good idea to get a head start on this while we're still working on solving other logistical issues.

Thank you for any thought you are willing to offer. There are not solutions that are too silly or non-conventional and I will appreciate anything you can come up with because we here are all out of ideas!

P.S.: Someone on another forum offered up using a private call as an option. The dispatches coming from the metro dispatching agency are automated. They are sent out by locution. I don't think there is a way to do that...
 
How many agencies does the metro dispatch dispatch for? Why not have a different channel for each agency so that unless you are scanning you only hear your own traffic?
 
Locution can send Alpha pages to phones. Perhaps have the locution dispatch system send an AlphaPage to your phone as well as the campus dispatch system. Or, I'm sure there are some VHF or UHF channels still allocated… You can simulcast the 800 talk group for dispatch with tones on a UHF or VHF channel and have that monitored by the Minator.

Unfortunately, there's no easy solution. I work in a system that uses 800 digital talk groups, four different dispatch centers aside from our primary dispatch, alpha pagers, VHF and UHF Minator pagers… as well as text messages to our phones and occasionally we still miss a call.

How are other services in your area being alerted?
 
mainly one agency with 34 stations. and it's not our choice, we're integrating into the existing system. We have a bit more leeway with the campus system and changing that around, but as far as metro dispatch, we can only follow what they do. They dispatch for a couple of suburbs so I might put them at 45 stations total? Maybe that's a high estimate, but we can't change the talkgroups unfortuantely.
 
So here's my question:


The only workaround I can see is at night only to monitor the campus dispatch and have the dispatchers who are awake monitor the city talkgroup to listen for our numbers, but this puts more work on the dispatchers and I feel is also a very convoluted way to go about this. Unfortunately, my knowledge of radio systems is limited and I have not done much work with Digital systems to think of other solutions. Is there a way that anyone can see to make this easier?

As you mention, asking the campus dispatchers to monitor a metro dispatch frequency is not a good idea, and they will not like you.

Do you need to be dispatched directly by the metro agency? Or could you do instead what many private ambulance companies do and have a landline between the metro agency and your own (private) agency. Where I live now if you call AMR for a medical emergency and request an ambulance, they will EMD the call and then landline fire so that the fire dispatcher can send the closest fire unit as well.

Perhaps this could work in reverse?

When the metro dispatch receives a call from your area, they could just contact your campus dispatch directly and tone you out? You could then monitor/talk to the metro dispatch for the call info, but this gets around the "tone" problem, maybe?

We do a similar thing where I work too for our 911 contract. When a citizen calls 911 the calls is answered by a town call taker. If it is medical, it is transferred to my company's dispatch and then EMDd, and the appropriate ambulance(s) are sent. Dispatch then landlines the town to give them the call info, and police and fire will add themselves to the call if they wish too.

I am no expert in these systems, but perhaps these examples/ramblings will give you an idea or two (or none).
 
Tigger,

This is a good thought, but the time involved in toning us out will make us obsolete before we get up and running. We will actually be run by the state, so we're not actually a private service, but in making sure all the municipalities around us are happy, we are going to work as a co-response at first. Both our unit(s) and whomever was in charge of the territory we are going into's unit(s) will respond at the same time. We will get there first, provide services, and this will allow the incoming units to evaluate our performance.

The dispatching landlining take an additional 2 minutes and 30 some odd seconds (some other municipalities do it here that way so there are statistics on it) and by that time the nearest units will be able to beat us in or be pretty close to it, and we will never get off of the co-responding status...

This sounds like overkill, but aren't 800 systems just setup to use different voice channels? Is there a pager out there that can just monitor a few different voice channels? No idea if that would even work in an 800 system...
 
No. There are no "tone alert" systems that work with 800 MHz radios. That's why most systems use one of their legacy VHF or UHF channels for alerting. Either two tone for Minitors or POCSAG for alpha pagers. That's why I asked how the other departments are being alerted. The locution CAD has multiple options for station alerting, including alpha paging, direct station paging over radio or dedicated phone lines, it can simulcast the voice announcement over a separate radio channel for tone/voice paging as well.
 
Are these things avaliable by default on locution or is it going to be a value added service that we're going to have to pay for? My budget for dispatching is very limited since they figured we had 2 dispatchers willing to dispatch for us so I'm trying to get things to work without too much more effort.

I am looking into whether we have a legacy VHF/UHF channel or not. Hopefully someone got lazy and decided not to dismantle the system when we stopped using it?
 
With Locution (or any other CAD system) you'll pay for it. ;)

Seriously, I'd talk to the director of comm center and explain your issues and see if they may have any solutions. Whatever you decide, expect to spend some money. TANSTAAFL. ;)
 
The batallion chief of the dispatching agency and some of my people are working on the issue. He thinks its a low level issue that we can save for later, so I'm just putting out some feelers right now since I don't want to be blindsighted by this later.

And while I don't expect a free lunch, when we're already paying millions for the locution lunch, I do expect the diet coke to come with it...
 
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