call forward to external destination PRI

[sunspark]

I have an issue in one of our site with PRI link - when the users try to call forward to any destination (mobile or national number) it works , but when they try to forward (call forward always) to our main number ( in another city) it doesnt work.

we are able to call this main destination , the issue is only when we try to use the call forward always- to this destination.

 i have already open a case , but i have no answer . Any idea please ?



2021-02-11  23:17:11  Link 1  - To Mitel   - HLen 4, ILen 13, IType 5
SAPI 0 TEI 0 C/R 1 P/F 0 NR 14 NS 66 INFO Dest PD=0x8 CR=0x7d4  PROGRESS(0x3)
1   00001000 Information Element: Cause: 
2   IE Length                   : 2 octets
3   1------- Extension bit      : Not Continued
    -00----- Coding Standard    : CCITT
    ---0---- spare 
    ----0111 Location           : International Network
4   1------- Extension bit      : Not Continued
    -1110010 (0x72)Unknown/Invalid cause code!!
1   00011110 Information Element: Progress Indicator:
2   IE Length                   : 2 octets
3   1------- Extension bit      : Not Continued
    -00----- Coding Standard    : CCITT
    ---0---- Spare              : Spare
    ----0010 Location           : Public network serving the local user
4   1------- Extension bit      : Not Continued
    -0000001 Description        : Call is not end-to-end ISDN

[ZuluAlpha]

Sunspark, this conerns me:

    -0000001 Description        : Call is not end-to-end ISDN

Do you have QSIG Trunks configured between the offices and a PRI for other calls?

[sunspark]

hello,

no qsig trunk

[acejavelin]

If your EDT trace looks good and the proper digits are going out, might be time to talk to your telco... Normally I would go for a restriction of passing the original Caller ID through, but you say you can forward to other long distance numbers, so I think I would troubleshoot with the telco and find out why they are rejecting the call.

[sunspark]

Yes i can forward to others destinations and i'm able to call this destination(only call forward doesn't work for this destination )

Our telco told us that it's a problem between telco.  It's been 5 months that we wait without any solution