Cell Relay Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Re: ATM Call-Reference
"Thomas Frieling" <thomas.frieling@experteach.de> wrote in message news:8sm5em$buv$1@nnrp1.deja.com... > In article <39ed9bb2$1@manno>, > "Gian Carlo" <doziog@die.supsi.ch> wrote: > > > (...) > > 1. How is this call reference assigned? > > 2. Is the call reference Value setted the first time by the switch or by the > > end-user ? > > It is assigned by the originating side. This can be both an end system or > a network node. > > > I'm writing the signalling-program and I have to check if the Call-Reference > > is "recognized" but I didn't found with wich kind of value I have to compare > > the Call-Reference. Do I receive the value from the switch or do I have to > > set it the first time ? > > (...) > > The procedures are described in Q.2931, section 4.3. UNI/Sig 4.0 > explicitly refers to Q.2931 and this section. > Funny you should ask, I was just analyzing a trace and then read your post. Pay attention to the Q2931 section. Yes, this indeed shows the call reference assigned at the originating side. I included the rest just for fun. Leny Freeman Alcatel, Tech Support. - - - - - - - - - - - - - - - - - - - - Frame 3 - - - - - - - - - - - - - - - - - - - - Frame Status Source Address Dest. Address Size Rel. Time Delta Time Abs. Time Summary 3 DCE.0.5 DTE 144 0:00:00.038 0.038.311 11/02/2000 03:52:26 PM Q2931: calling =39:0348:8001 BC90 0001 0101 46B0:Xircm3475506:03 ATM: ----- ATM Header ----- ATM: ATM: Frame 3 arrived at 15:52:26.1396; frame size is 144 (0090 hex) bytes. ATM: Call reference = 1035 ATM: Link = DCE ATM: Virtual path id = 0 ATM: Virtual channel id = 5 ATM: SSCOP: ----- SSCOP ----- SSCOP: SSCOP: SD(Sequence Connection-mode Data) SSCOP: SD send seq num N(S) = 4154 SSCOP: Q2931: ----- UNI Signaling ----- Q2931: Q2931: Protocol discriminator = 09 Q2931: Length of call reference = 3 bytes Q2931: Call reference flag = 0... ....(message sent from call reference originator) Q2931: Call reference value = 1035 Q2931: Message type = 05 (Setup) Q2931: Message type Flag/Action = 80 Q2931: ...0 .... = flag Q2931: .... ..00 = action (Clear Call) Q2931: Message Length = 103 Q2931: Q2931: Info element id = 58 (ATM adaptation layer parameters) Q2931: Coding Standard/Action = 80 Q2931: 1... .... = ext Q2931: .00. .... = Coding Standard = ITU-T Standardized Q2931: ...0 .... = Flag = Not significant Q2931: .... 0... = Reserved Q2931: .... .000 = Action Indicator = Clear Call Q2931: Length of info element = 9 byte(s) Q2931: AAL type = AAL type 5 Q2931: Forward max CPCS-SDU Q2931: id = 140 Q2931: size = 1516 Q2931: Backward max CPCS-SDU Q2931: id = 129 Q2931: size = 1516 Q2931: SSCS type Q2931: id = 132 Q2931: type = Null Q2931: Q2931: Info element id = 59 (ATM traffic descriptor) Q2931: Coding Standard/Action = 80 Q2931: 1... .... = ext Q2931: .00. .... = Coding Standard = ITU-T Standardized Q2931: ...0 .... = Flag = Not significant Q2931: .... 0... = Reserved Q2931: .... .000 = Action Indicator = Clear Call Q2931: Length of info element = 9 byte(s) Q2931: Parameter Identifier = x84 ( Forward Peak Cell Rate (CLP=0+1) ) Q2931: Forward Peak Cell Rate = 365566 cells/sec Q2931: Parameter Identifier = x85 ( Backward Peak Cell Rate (CLP=0+1) ) Q2931: Backward Peak Cell Rate = 365566 cells/sec Q2931: Parameter Identifier = xBE ( Best Effort Indicator ) Q2931: Q2931: Info element id = 5E (Broadband bearer capability) Q2931: Coding Standard/Action = 80 Q2931: 1... .... = ext Q2931: .00. .... = Coding Standard = ITU-T Standardized Q2931: ...0 .... = Flag = Not significant Q2931: .... 0... = Reserved Q2931: .... .000 = Action Indicator = Clear Call Q2931: Length of info element = 3 byte(s) Q2931: Octet 5 = 10 Q2931: 0... .... = ext Q2931: .00. .... = Spare Q2931: ...1 0000 = Bearer Class = BCOB-X Q2931: Octet5a = 80 Q2931: 1... .... = ext Q2931: .00. .... = Spare Q2931: ...0 00.. = Traffic Type = No indication Q2931: .... ..00 = Timing requirements = No indication Q2931: Octet6 = 80 Q2931: 1... .... = ext Q2931: .00. .... = Susceptibility To Clipping = Not susceptible to clipping Q2931: ...0 00.. = Spare Q2931: .... ..00 = User Plane Connection Configuration = Point-to-point Q2931: Q2931: Info element id = 5F (Broadband low layer information) Q2931: Coding Standard/Action = 80 Q2931: 1... .... = ext Q2931: .00. .... = Coding Standard = ITU-T Standardized Q2931: ...0 .... = Flag = Not significant Q2931: .... 0... = Reserved Q2931: .... .000 = Action Indicator = Clear Call Q2931: Length of info element = 9 byte(s) Q2931: Layer 3 protocol Q2931: 0... .... = ext Q2931: .11. .... = layer 3 id Q2931: ...0 1011 = User info layer 3 protocol(ISO/IEC TR 9577) Q2931: IPI = 80 (hex) Q2931: SNAP ID = 00 Q2931: OUI = 0x00A03E Q2931: PID = 0001(LE config direct VCC) Q2931: Q2931: Info element id = 70 (Called party number) Q2931: Coding Standard/Action = 80 Q2931: 1... .... = ext Q2931: .00. .... = Coding Standard = ITU-T Standardized Q2931: ...0 .... = Flag = Not significant Q2931: .... 0... = Reserved Q2931: .... .000 = Action Indicator = Clear Call Q2931: Length of info element = 21 byte(s) Q2931: 1... .... = ext Q2931: .000 .... = type of num(Unknown) Q2931: .... 0010 = addressing/num plan id(ATM Endsystem Address) Q2931: C5:0079:0000 0000 0000 0000 0000:00A03E000001:00 Q2931: Q2931: Info element id = 6C (Calling party number) Q2931: Coding Standard/Action = 80 Q2931: 1... .... = ext Q2931: .00. .... = Coding Standard = ITU-T Standardized Q2931: ...0 .... = Flag = Not significant Q2931: .... 0... = Reserved Q2931: .... .000 = Action Indicator = Clear Call Q2931: Length of info element = 22 byte(s) Q2931: 0... .... = ext Q2931: .000 .... = type of num(Unknown) Q2931: .... 0010 = addressing/num plan id(ATM Endsystem Address) Q2931: 1... .... = ext Q2931: .00. .... = Presentation indicator (Presentation allowed) Q2931: .... ..00 = Screening indicator (User-provided, not screened) Q2931: 39:0348:8001 BC90 0001 0101 46B0:Xircm3475506:03 Q2931: Q2931: Info element id = 5C (Quality of service) Q2931: Coding Standard/Action = 80 Q2931: 1... .... = ext Q2931: .00. .... = Coding Standard = ITU-T Standardized Q2931: ...0 .... = Flag = Not significant Q2931: .... 0... = Reserved Q2931: .... .000 = Action Indicator = Clear Call Q2931: Length of info element = 2 byte(s) Q2931: QoS class Q2931: QoS forward = QoS class 0 - Unspecified QoS class Q2931: Qos backward = QoS class 0 - Unspecified QoS class Q2931: ATM: ATM: ----- AAL5 Trailer ----- ATM: ATM: 20 pad octets ATM: UU = 0 ATM: CPI = 0 ATM: Length = 116 ATM: CRC = D30D1903 (Correct) |
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