Hello Eric Maybe you can start by sending "ACM" before an "ANM". Both switches need to catch their voice circuits(trunk) in order to place a call. That's what ACM is for. Not much VoIP related. regards, Tomokazu Omura -----In reply to From: clec at cygnustel.com Date: Mon, 23 Aug 2010 13:48:37 -0500 (CDT) Subject: [VoiceOps] ATT Mobility SS7 Uggggh!

Hello all,

When an ATT Mobility customer calls into our switch the call is dropped. The ss7 trace looks like this:

ISUP IN 81N0 01 1 10 24 IAM 15:10:40

NATR OF CONN: B.00010000 BITS BA: .NO_SAT_CIRC BITS DC: .NO_COT_REQD BIT E : .INCO_HALF_ECHO 15:10:40

FWD CALL IND: B.00100000 B.00010001 BIT A : .NATIONAL_CALL BITS CB: .NO_END_MTHD BIT D : .NO_INTERWK 15:10:40 BIT E : .NO_INDICAT BIT F : .ISDN_USER_PART BITS HG: .ISUP_PREFERED BIT I : .ISDN BIT M : .NUM_TRANS 15:10:40

CLG PTY CTGY: ORDINARY SUB 15:10:40

USER SVCE INFO: CODE STD: B.00 .CCITT_CODE_STD XFER CAP: B.00000 .SPEECH_TRANSFER XFER MODE: B.00 .CKT_TRANSFER XFER RATE: B.10000 .64KB_SEC USER PROT ID: B.0100010 15:10:40

ISUP OUT 81N0 01 1 10 24 ANM 15:10:40

ISUP IN 81N0 01 1 10 24 REL 15:10:40

LOC LOLO B.0010 CODE B.00 CAUSE INVC 100 15:10:40

ISUP OUT 81N0 01 1 10 24 RLC 15:10:40

How can there be an 'invalid coding' on an ANM message?!

They have had 7 days now to fix this and I haven't been able to get any sort of response from them. We have customers screaming at us about this. Any ideas?

-Eric

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