Blocked inbound caller id calls not routing

[jmarberg]

Hello,

We are having an issue where if a caller blocks their caller ID the inbound call is not routed.  I have tested it myself by using *67 and dialing into my desk.  I get a few seconds of silence then the call drops.   The calling party name is anonymous and the calling number shows N/A. I get the end result of unallocated or unassigned number. The call hits CUCM as it is logged in CDR.  So I'm at a routing issue but i don't know what. I can place a call again without the *67 and the call routes as desired. What stops the call based on the callers number from routing?

Thank you

Here is a snippet of the q931 debug:

364557: Oct 30 10:37:41.239: ISDN Se0/1/0:23 Q931: RX <- SETUP pd = 8 callref = 0x2D22
Bearer Capability i = 0x8090A2
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Facility i = 0x9F8B0100A1110201190201008209416E6F6E796D6F7573
Protocol Profile = Networking Extensions
0xA1110201190201008209416E6F6E796D6F7573
Component = Invoke component
Invoke Id = 25
Operation = CallingName
Name presentation restricted
Name = Anonymous
Display i = 'Anonymous'
Calling Party Number i = 0x00A0, N/A
Plan:Unknown, Type:Unknown
Called Party Number i = 0x80, '84563'
Plan:Unknown, Type:Unknown
364558: Oct 30 10:37:41.240: ISDN Se0/1/0:23 Q931: Received SETUP callref = 0xAD22 callID = 0x7500 switch = primary-ni interface = User
364559: Oct 30 10:37:41.244: ISDN Se0/1/0:23 Q931: TX -> CALL_PROC pd = 8 callref = 0xAD22
Channel ID i = 0xA98381
Exclusive, Channel 1
364560: Oct 30 10:37:41.406: ISDN Se0/1/0:23 Q931: TX -> DISCONNECT pd = 8 callref = 0xAD22
Cause i = 0x8081 - Unallocated/unassigned number

[Roger Kallberg]

Do you have a setup for inbound calls from PSTN to route based on calling number?

[jmarberg]

We do have some numbers setup to block them from inbound calling but thats all i know of.

[Roger Kallberg · Accepted solution]

Then you need to follow this post for how to allow calls with no ANI to be processed. Blocking Calls Based on Calling Party ID 

[jmarberg]

We had all of those steps in place, the script was the final fix.  Once that was applied the calls with blocked caller id started coming through.

Thank you!

[Maren Mahoney]

Look for the "Reject Anonymous Calls" checkbox on the DN configuration page.

Is that ISDN circuit interacting with CUCM using MGCP or a SIP Trunk? If it is a SIP Trunk, also check the "Anonymous Call Block" setting on the SIP Profile. I can't remember if there is a similar setting on an MGCP gateway configuration page, but there could be.

Maren