I have never had one running at a site for too long so I cannot speak for issues.
"Would Sasktel still be my service provider?
Does each VoIP line has a monthly fee or is it covered with my internet subscription?"
Voip.MS is a SIP Trunk carrier, they do not provide Internet.
You would normally use just one carrier but sometimes another is used depending on the situation.
If after testing with the SIP Trunk Carrier & Gateway method via SaskTels internet, then you could transfer all your lines over from Sakstel to the SIP carrier.
However I would keep the analogs you have and just use the new ones for dialing out as a house rule, prime the sets to Pool B.
The ZTE MF279T smarthub seems to be a unit for home and not much for programming, not sure why they would give you that for a business.
I think to sign up for Voip.MS is free but you need to pay for a DID, and can have several free sub accounts.
Once you have a DID then you program it at Voip.MS admin page, and on the Grandstream gateway.
BTW the HT818 has a v2 which has a nicer GUI than v1, maybe more features?
This situation is not easily rectified because you have new and old technology so you need to try and see if SaskTel can go in the backend and change anything or contact ZTE yourself.
Have you tested with a Butt Set between the Hub and the MICS to see if if you can here tones when buttons pressed in or out?
About the cards, another user fixed a similar DTMF issue by going with the much older LSDS (DS) card which is life before Caller ID.
If you have exhausted trying all other ways and want to be a Guinea pig and try the Grandstream/SIP Trunk method:
-Programming at the SIP carrier
-Programming at the Gateway
-Connect the telephone line ports to the KSU and program the lines to set/s
-Connect the Grandstream ethernet(WAN?) port to the network switch, or available port on the back of the Smarthub.
From your other thread:
"I have 8 lines coming into this system now.
3 are wired
5 are with smart hubs"
You could forward your line 3 (wired) to the Voip.MS DID.
Now make some test calls and if it works.
Note that I think you get 2 channels (calls) per DID but
hopefully others can confirm, this means program/wire up 2 ports on the Grandstream to the KSU.
Although it may take a few days for somebody to respond.
I have never had one running at a site for too long so I cannot speak for issues.
"Would Sasktel still be my service provider?
Does each VoIP line has a monthly fee or is it covered with my internet subscription?"
Voip.MS is a SIP Trunk carrier, they do not provide Internet.
You would normally use just one carrier for lines but sometimes another is used.
I think to sign up for Voip.MS it's free but you need to pay for a DID, and can have several free sub accounts.
Once you have a DID then you program at Voip.MS and on the Grandstream gateway.
This situation is not easily rectified because you have new and old technology so you need to try and see if SaskTel can go in the backend and change anything or contact ZTE yourself.
If you want to be a Guinea pig and try the Grandstream/SIP Trunk method:
-Programming at the SIP carrier
-Programming at the Gateway
-Connect the telephone line ports to the KSU
-Connect the Grandstream ethernet(WAN?) port to the network switch, or available port on the back of the Smarthub.
From your other thread:
"I have 8 lines coming into this system now.
3 are wired
5 are with smart hubs"
You could forward your line 3 (wired) to the Voip.MS DID.
Now make some test calls and if it works.
Note that I think you get 2 channels (calls) per DID but
hopefully others can confirm, this means program/wire up 2 ports on the Grandstream to the KSU.
A small business with basic needs does not even need a phone system with these SIP trunk carriers.
Once you see the programming and all its features you will want to play.
Outta Ammo!