Calling Party number not Displayed on 6941 SIP phone 9.2(1) firmware

[roland.bellwald]

Inbound PSTN calls arrive on the H.323 voice gateway IOS Version 12.15(1)T1 continue to the CUCM Version 8.5.1.12900-7 which signalls the call to the phones (8961 and 6941) with firmware 9.2(1).

On the 8961 phones, the calls are displayed fine...

"unknown" - which is the name of the calling party and not known from the PSTN above the "0791234567" - which is the phone number of the calling party.

On the 6941 phones, the calls are not displayed corretly. As the phone does display the name only and does not show the calling party's phone number. As those are external calls, the callig party name is (except for the SNR users) never known and therefore the calling party name display is not of any use for them. Especially as the calling party phone number is not shown at all!

Is this a point I can change by configuration or is it a bug in the 6941 SIP phone firmware which is not known yet?

Hope someone has an idea...

Roland

[Limitless1801]

You need to find out if the Telco supports Facility IE. Calling Name support via Facility IE, it is only available via MGCP. H.323 gateways still use Display IE.

It works only if your PRI is connected to an MGCP gateway, because the CUCM controls the D-channel. It doesn't work with an H.323 gateway. The "send caller name in facility ie" is only available when using primary-ni as the switch type; therefore, you may want to use this type when you configure your isdn switch-type. Having said that, you can resolve this issue by entering the following commands:

System Configuration

router(config)#h323

router(conf)#h225 display-ie ccm-compatible

h323 class configuration

router(config)#voice class h323 1

router(config-class)# h225 display-ie ccm-compatible

intereface configuration

router(config)# int s0/1/0:23

router(config-if)#isdn supp-service name calling

You can either use the System Configuration and Interface Configuration or H323  configuration and Interface configuration.

RG

[roland.bellwald]

Thanks a lot for the quick answer. My colleague is testing it now (I will leave for two weeks vacation) and will get back to you as soon as possible.

There is on little doubt left. It kind of tells the right thing. It is showing "unknown" and the telco is sending no name, but the number should be populated in this name field. Hope your recommendation does exactly this.

Thanks again!

Roland