Incoming Call Routing to Specific Extension


Is it possible to route specific incoming phone numbers to a specific extension to avoid ivr prompting?

I run a small business out of my home with a UCM6202 with one incoming line. In an attempt to slow down/stop the plethora of robocalls, I have activated ivr with prompts for personal and business calls.

It would be great if I could enumerate “approved” phone numbers to ring directly to my personal extension.

I have tried searching in forum but I’m not sure what phrasing to use for my request. If it has been answered before, I apologize.

Thanks in advance for any help or suggestions.

Frank Carll


Edit Inbound Rule / CallerID Pattern



I appreciate your response. However, I just can’t seem to get it working.

I’m assuming that you add a new inbound route for each “approved” number and then set up for multiple modes?

If you would be so kind as to send screen shots for say the following numbers:


Regards, Frank


this is a forum, not Grandstream support,
I wrote above exactly where you need to enter the number,
create a new path and enter the calling number in -> Edit Inbound Rule / CallerID Pattern
obviously you have to enter it exactly

Good work


Once again I appreciate your response.

Unfortunately, it has not solved my problem.

In the 30+ years that I have been puttering around computers and such, you are the first to suggest that a forum is the wrong place to ask for help.

I’m sorry that as far as you are concerned, I posted a request to the wrong place.


don’t understand your way,
I wrote you exactly what to do,
all I have left is to come there and do it myself,
but from Italy it would cost too much.

If you are unable to do so, there are 2 choices: contact a professional in the area, or contact Grandstream Assistance

I’ll give you a hand, FREE, you have to solve the rest.

Good work.


I am pretty sure you can use the incoming number as a whitelisted caller id to send it direct to an extension. Seek out one of the Grandstream resellers in your area to pay for some expertise and get the job done.


As it has been said already, the Inbound Route is the place to do this.
It has been a while since I was learning about Routes, and I think I recall a video that explained something very close to what you desire. Maybe one of these will help you figure it out.
You also need to be very specific about the order of the Routes. The most specific/selective routes need to be at the top of the list.

GS Tutorial - UCM Inbound Routes

Grandstream UCM Advanced Inbound/Outbound Routing Webinar



Filtered route caller ID
IVR routing
It’s very simple, you edit Pattern twice
1 time with the normal route, so at home IVR, you don’t touch it since it works.
the second you put the same Pattern number as for 1
Source CID = Caller ID
CallerID Pattern= the telephone numbers of callers who must bypass the IVR
then you choose the destination

so there are two routes for the same Pattern


It works !!!

Thank you so much for your help.