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Community Member

SIP Call Issue

Hi all

I have Cisco CME and Ericsson system which connected which other using E1 card . My CME is connected to SIP Trunk . My quesion as below:-

1-When Ericsson phone need to do external call , call will go to CME router and call goes ok. My question no dial-tone is heard?. Any thing should be done on CME to allow Ericsson get dial-tone when they do external calls or should be done on Ericsson.

2-Calls from Cisco to Ericsson and vice versa are ok. When incoming call come to AA of Ericsson ,then put Cisco CME ext we get unknown or atonomus number. Please find the below debug for CME ext 59946:-

Bearer Capability i = 0x8090A3

                Standard = CCITT

                Transfer Capability = Speech 

                Transfer Mode = Circuit

                Transfer Rate = 64 kbit/s

        Channel ID i = 0xA1838D

                Preferred, Channel 13

        Facility i = 0x9FAA068001008201008B0100A1100201010201553008820301B850860101

        Progress Ind i = 0x8183 - Origination address is non-ISDN 

        Called Party Number i = 0x81, '59946'

                Plan:ISDN, Type:Unknown

        Shift to Codeset 4

        Codeset 4 IE 0x31  i = 0x80

*Nov 16 13:23:53.395: ISDN Se0/0/1:15 **ERROR**: isdn_init_fac_data: No Opval 0

*Nov 16 13:23:53.395: ISDN Se0/0/1:15 **ERROR**: isdn_init_fac_data: No Opval 0

*Nov 16 13:23:53.399: ISDN Se0/0/1:15 Q931: TX -> CALL_PROC pd = 8  callref = 0x8205



SIP Call Issue


1) I would expect the siemens switch to provide an external dial tone for it users if that is what is required.

Like say when they dial 9 followed by a dn --- 9.123456 the local switch should play back the dial tone and absord the digit "9".

2) Looking at the debug your CME is receiving a facility field which belongs to the QSIG protocol.

I dont know what type of ericsonns you are using but I think you need to configure the E1 trunk on your CME as QSIG.

Here is an example for CME to Siemens Hipath 4000

More interoperability examples can be found here:-

Please rate useful posts.

Regards, Alex. Please rate useful posts.
Community Member

SIP Call Issue


1- That means Ericsson PBX should send dial tone as mentioned as 9 not Cisco , please advise.

2- Yes , my friend i have already configured QSIG but without any success. Again calls between CME , Ericsson and from Ericsson to CME are so good (name and calling id). My issue when i get a call from outside , then hits AA of Ericsson then i enter digits of Cisco IP hone , i get unknown number. And same on my CUCM.Please advise.


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