[VoiceOps] Calls Missing GAP Information

Chris Wallace lists at iamchriswallace.com
Tue Sep 13 10:46:09 EDT 2011


	Has anyone else seen recently a large number of calls coming into them that do not have the GAP information populated in the SS7 IAM?  We see this issue come up a few times a years and we become the switchboard for people calling our customers.  I know, I know… why the heck is our LRN the same as our main telephone number? Sorry, this was someone else decision years ago and we have lived with the consequences since.

	Yesterday morning it was Comcast, which fixed itself right before lunch time as I was getting transferred around trying to open a ticket, this morning it seems to be Verizon wireless.  We have had this issue in the past with MetroPCS and Sprint, they always identify it as routing changes with phantom trunks, meaning they are doing LCR and dumping these calls wherever until an issue comes up.  This in turn makes us look bad to our customers because their customers can't call them.

How are other people dealing with these issues other than just constantly opening tickets, etc.?



Verizon Call (This morning "Bad")
ISUP message received:

---------------------------------------
CIC: 1171
  10010011 :CIC LSB(147)
  00000100 :CIC MSB(4)
---------------------------------------
---------------------------------------
Message Type: Initial address
  00000001 :MESSAGE TYPE(Initial address)
---------------------------------------
---------------------------------------
Nature of Connection Indicator:
  ......00 :SATELLITE INDICATOR(No Satellite)
  ....00.. :CONT. CHECK INDICATOR(Cont. Check Not Required)
  ...1.... :RESERVED(Outgoing Echo Control Included)
  000..... :SPARE(0)
---------------------------------------
---------------------------------------
Forward Call Indicators:
  .......0 :INCOMING_INTL_CALL(Not an Incoming International Call)
  .....00. :END-TO-END METHOD(No End-to-end method available)
  ....0... :INTERWORKING(No interworking encountered)
  ...0.... :SPARE1(0)
  ..1..... :ISUP (ISDN User Part used all the way)
  01...... :ISUP PREFERENCE(ISDN User Part not required all the way)
  .......0 :ISDN ACCESS(Originating access non-ISDN)
  .....00. :SCCP METHOD(No Indication)
  ....0... :SPARE2(0)
  ...1.... :PORTED NUMBER TRANSLATION(Number translated)
  ..0..... :QUERY ON RELEASE(No QoR routing attempt in progress)
  00...... :RESERVED(0)
---------------------------------------
---------------------------------------
Calling Party's Category:
  00001010 :CALLING PARTY CATEGORY(Ordinary Calling Subscriber)
---------------------------------------
---------------------------------------
Called Number: 239333XXXX
  .0000011 :NATURE OF ADDRESS(National Number)
  0....... :ODD/EVEN(Even)
  ....0000 :RESERVED(0)
  .001.... :NUMBERING PLAN(ISDN)
  0....... :SPARE(0)
---------------------------------------
---------------------------------------
User Service Information:
  ...00000 :INFORMATION TRANSFER CAPABILITY(0)
  .00..... :CODING STANDARD(0)
  1....... :EXT1(1)
  ...10000 :INFORMATION TRANSFER RATE(16)
  .00..... :TRANSFER MODE(0)
  1....... :EXT2(1)
  ...00010 :USER INFORMATION LAYER 1(2)
  .01..... :LAYER 1 IDENTIFICATION(1)
  1....... :EXT3(1)
---------------------------------------
---------------------------------------
OPTIONAL PARAMETERS: 
---------------------------------------
---------------------------------------
Calling Number: 860434XXXX
  .0000011 :NATURE OF ADDRESS(National Number)
  0....... :ODD/EVEN(Even)
  ......01 :SCREENING(User Provided, screening passed)
  ....00.. :PRESENTATION(Presentation allowed)
  .001.... :NUMBERING PLAN(ISDN)
  0....... :SPARE(0)
---------------------------------------
---------------------------------------
Jurisdiction Information: 860434
---------------------------------------
END OF OPTIONAL PARAMETERS
---------------------------------------
HEX DUMP:
9304011060100a03060d038090a20703
1032393300000a0703116840439536c4
0368404300

Same call yesterday that routed correctly…

ISUP message received:
---------------------------------------
CIC: 1058
  00100010 :CIC LSB(34)
  00000100 :CIC MSB(4)
---------------------------------------
---------------------------------------
Message Type: Initial address
  00000001 :MESSAGE TYPE(Initial address)
---------------------------------------
---------------------------------------
Nature of Connection Indicator:
  ......00 :SATELLITE INDICATOR(No Satellite)
  ....00.. :CONT. CHECK INDICATOR(Cont. Check Not Required)
  ...1.... :RESERVED(Outgoing Echo Control Included)
  000..... :SPARE(0)
---------------------------------------
---------------------------------------
Forward Call Indicators:
  .......0 :INCOMING_INTL_CALL(Not an Incoming International Call)
  .....00. :END-TO-END METHOD(No End-to-end method available)
  ....0... :INTERWORKING(No interworking encountered)
  ...0.... :SPARE1(0)
  ..1..... :ISUP (ISDN User Part used all the way)
  01...... :ISUP PREFERENCE(ISDN User Part not required all the way)
  .......0 :ISDN ACCESS(Originating access non-ISDN)
  .....00. :SCCP METHOD(No Indication)
  ....0... :SPARE2(0)
  ...1.... :PORTED NUMBER TRANSLATION(Number translated)
  ..0..... :QUERY ON RELEASE(No QoR routing attempt in progress)
  00...... :RESERVED(0)
---------------------------------------
---------------------------------------
Calling Party's Category:
  00001010 :CALLING PARTY CATEGORY(Ordinary Calling Subscriber)
---------------------------------------
---------------------------------------
Called Number: 239333XXXX
  .0000011 :NATURE OF ADDRESS(National Number)
  0....... :ODD/EVEN(Even)
  ....0000 :RESERVED(0)
  .001.... :NUMBERING PLAN(ISDN)
  0....... :SPARE(0)
---------------------------------------
---------------------------------------
User Service Information:
  ...00000 :INFORMATION TRANSFER CAPABILITY(0)
  .00..... :CODING STANDARD(0)
  1....... :EXT1(1)
  ...10000 :INFORMATION TRANSFER RATE(16)
  .00..... :TRANSFER MODE(0)
  1....... :EXT2(1)
  ...00010 :USER INFORMATION LAYER 1(2)
  .01..... :LAYER 1 IDENTIFICATION(1)
  1....... :EXT3(1)
---------------------------------------
---------------------------------------
OPTIONAL PARAMETERS: 
---------------------------------------
---------------------------------------
Calling Number: 860434XXXX
  .0000011 :NATURE OF ADDRESS(National Number)
  0....... :ODD/EVEN(Even)
  ......01 :SCREENING(User Provided, screening passed)
  ....00.. :PRESENTATION(Presentation allowed)
  .001.... :NUMBERING PLAN(ISDN)
  0....... :SPARE(0)
---------------------------------------
---------------------------------------
Optional Parameter:
  Type: 199(UNKNOWN)
  Length (Bits):8
  00100000 :OCTET 0(32  )
---------------------------------------
---------------------------------------
Generic Address: 239325XXXX
  11000000 :Type of Address(Ported Number)
  .0000011 :NATURE OF ADDRESS(National Number)
  0....... :ODD/EVEN(Even)
  ......00 :RESERVED(0)
  ....00.. :PRESENTATION(Presentation allowed)
  .001.... :NUMBERING PLAN(ISDN)
  0....... :SPARE(0)
---------------------------------------
---------------------------------------
Jurisdiction Information: 860434
---------------------------------------
END OF OPTIONAL PARAMETERS
---------------------------------------
HEX DUMP:
2204011060100a03060d038090a20703
1032393300000a0703116840439536c7
0120c008c003103239520500c4036840
4300


---Chris


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