Eric Huang ??? wrote: > Hi Matthew and all , > I am still trying to find the problem about SS7 signaling route. Now I > am using SS7 protocol analyzer to check further my problem. > my scenario: > > Signaling (16): > Asterisk (PC 100) <-> MGW (PC 1001) <-> MSS (PC 1000) > > Circuit (1-15, 17,31): > Asterisk (PC 100) <-> MSS (PC 1000) > > Asterisk's config in zapata.conf: > pointcode = 100 > adjpointcode = 1001 > defaultdpc = 1000 > > MSS and MGW have configured routing correctly to see Asterisk (PC > 100). I have seen STLM between PC 100 and PC 1000, but CGR from PC 100 > to PC 1001 have no response back. I guess it's some problem with > routing. I am in the stage to link up MTP3 between PC 1000 and PC 100. > No successful ISUP messages yet in my scenario. Because I am really > new to SS7, hard for me now to describe/identify the problem. I have seen this before. In the ITU SS7 specs, there are two types of exchanges (in reference to bringing them up for the first time). There are exchanges that require a reset of the circuits when you bring the link up (Type A) and there are those that require no such reset before starting to make calls (Type B). I think perhaps a next logical step is to see what happens when you try to place a call out on the link. -- Matthew Fredrickson Software/Firmware Engineer Digium, Inc.
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