Outbound Caller ID not working on iPhone

[rajeswari.manoharan1]

Hi All,

We have CUCM 10.5.1 version. MGCP Gateways. The issue is when we call out to iPhone, the Caller ID is not displayed on it. Caller ID works fine while calling all other cell phones and PSTN. 

While I understand that this issue is related only to iPhones, it would be great if if you guys can provide some suggestions. May be you tried something and it worked out.

We tried: 

1) Erased the contact from iPhone. Re-added . Still, it comes up as "No Caller ID".
2) Changed Cellular "LTE"setting from just DATA to VOICE & DATA. Result is same.

Thanks for your time.

Rajeswari 

[Vivek Batra]

Hi,

Call manager scope is limited to sending correct caller id in correct format to your telco. Rest is upto telco how it handles the caller id.

You can verify with the output of debug isdn q931 and see if correct ANI is being sent for that particular call.

- Vivek

[rajeswari.manoharan1]

Hi, 

The debug logs does send the ANI. The cell phone provider is AT&T. We have one Android phone with AT&T and iPhone's provider is also AT&T. Below are the call samples/logs 

Call 1: Desk phone to AT&T Android Phone – Number displayed. 

284907: Jan 19 10:12:39.253 est: ISDN Se0/1/0:23 Q931: TX -> SETUP pd = 8 callref = 0x683D

Bearer Capability i = 0x8090A2

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98397

Exclusive, Channel 23

Calling Party Number i = 0x0081, 'XXXXXXXXXX'

Plan:Unknown, Type:Unknown

Called Party Number i = 0x80, 'XXXXXXXXXX'

Plan:Unknown, Type:Unknown

Call 2: Desk phone to AT&T Apple Phone – Number not displayed – Comes up as Unknown

284980: Jan 19 10:23:52.231 est: ISDN Se0/1/0:23 Q931: TX -> SETUP pd = 8 callref = 0x6844

Bearer Capability i = 0x8090A2

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98397

Exclusive, Channel 23

Calling Party Number i = 0x0081, 'XXXXXXXXXX'

L01A-0Dctr-3945-Voice1#

Plan:Unknown, Type:Unknown

Called Party Number i = 0x80, 'XXXXXXXXXX'

Plan:Unknown, Type:Unknown

Any other input on this?

 Thanks 

Rajeswari

[Vivek Batra]

Hi,

If call made to same provider with same ANI has difference in their behavior with respect to CLI presentation, I would get in touch with my Telco to ask for root cause.

- Vivek