I got the following repsonse from Telco for why outgoing calling name is not working. Is there a parameter that would allow me adjust the DSP field.
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There was also this. Here you are.
The first call is outbound from PBX, if you look in DSP field it should have +/- sign before name and it does not, second call is from me and see the same DSP field with +/- field and name display works
Below is explanation from my technology guy regarding these and attached spreadsheet explaining this
*********** Outbound Call from PBX ***************
<== 05:09:26:29.32 (CM Time: 12:13:43:56.78).
<== Q931: SETUP: from S[7053] L[1,58,0] E[22,57,0] SPA[----]
CR: 0,3C F2
BC: speech
64 kbit/s
circuit mode
mu-law speech
CID: 18
LENGTH: 03
Channel Selection Info: As Indicated in Following Octets
D-Channel Indicator: D-Channel NOT indicated
Preferred/Exclusive: Exclusive
Interface type = primary rate
Interface Identifier: IID Implicitly Identified
Channel Type: B - Channel Units (3).
Number Map: Channel is indicated by the number following.
Coding Standard: CCITT
Channel Number = 20
DSP: Kitch Library
CGN: e164
national_number
user_provided_passed_screening
presentation_allowed
5197430271
CDN: e164
national_number
5198979327
==> 05:09:26:29.32 (CM Time: 12:13:43:56.78).
==> Q931: STAT: to S[7053] L[1,58,0] E[22,57,0] SPA[----]
CR: 1,3C F2
CSE: user
invalid_information_element_contents
diag bytes = 28
CS: call initiated
*********** Inbound Call to PBX **************
==> 05:09:27:18.57 (CM Time: 12:13:44:46.03).
==> Q931: SETUP: to S[7053] L[1,58,0] E[22,57,0] SPA[----]
CR: 0,15 38
BC: speech
64 kbit/s
circuit mode
mu-law speech
CID: 18
LENGTH: 03
Channel Selection Info: As Indicated in Following Octets
D-Channel Indicator: D-Channel NOT indicated
Preferred/Exclusive: Exclusive
Interface type = primary rate
Interface Identifier: IID Implicitly Identified
Channel Type: B - Channel Units (3).
Number Map: Channel is indicated by the number following.
Coding Standard: CCITT
Channel Number = 4
DSP: ±ALLSTREAM
CGN: e164
national_number
network_provided
presentation_allowed
9056299815
CDN: e164
national_number
5197430271
<== 05:09:27:18.64 (CM Time: 12:13:44:46.10).
<== Q931: CALL PROC: from S[7053] L[1,58,0] E[22,57,0] SPA[----]
CR: 1,15 38
CID: 18
LENGTH: 03
Channel Selection Info: As Indicated in Following Octets
D-Channel Indicator: D-Channel NOT indicated
Preferred/Exclusive: Exclusive
Interface type = primary rate
Interface Identifier: IID Implicitly Identified
Channel Type: B - Channel Units (3).
Number Map: Channel is indicated by the number following.
Coding Standard: CCITT
Channel Number = 4
The byte which precedes the actual name information is in three parts. The first bit is a 1, and does not mean anything. The next three bits are referred to as, “associated information”, and basically indicate whether we are including a name, or requesting a name. For including a name they should be 011. The final 4 bits are the “display type”, with options for calling, called, and original called. For sending a calling number they should be 0001.
The little ± you see is actually a byte 10110001 (hex B1). When you see a + from the customer with the problem they have coded something else in this byte, and thus calling name is not actually being passed.
Attached is a spreadsheet confirming that the ± is the correct coding (10110001) for the byte in question.
