[c-nsp] SIP to ISDN Call Progress

[Marco Marzetti]

On Mon, 15 Nov 2010 13:51:49 +0100, "Brian Turnbow" <b.turnbow at twt.it>
wrote:
> Hi Marco
> 
> See inline
> 
>> -----Original Message-----
>> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
>> bounces at puck.nether.net] On Behalf Of Marco Marzetti
>> Sent: lunedì 15 novembre 2010 10:36
>> To: cisco-nsp at puck.nether.net
>> Subject: [c-nsp] SIP to ISDN Call Progress
>> 
>> 
>> Hello,
>> 
>> I have a problem with SIP to ISDN internetworking on Cisco IOS.
>> I'm unable to receive early-media messages from the ISDN side of the
>> call.
>> Hardware and software versions are: Cisco 2800 Software
>> (C2800NM-ENTSERVICES-M), Version 12.4(20)T6, RELEASE SOFTWARE (fc2).
>> 
>> # debug isdn q931 int Se0/1/0:15
>> Nov 15 10:06:54.437 CET: ISDN Se0/1/0:15 Q931: Applying typeplan for
>> sw-type 0x12 is 0x0 0x1, Calling num 03631970XXX
>> Nov 15 10:06:54.441 CET: ISDN Se0/1/0:15 Q931: Sending SETUP  callref =
>> 0x0D0D callID = 0x980D switch = primary-net5 interface = User
>> Nov 15 10:06:54.441 CET: ISDN Se0/1/0:15 Q931: TX -> SETUP pd = 8
>> callref
>> = 0x0D0D
>> 	Bearer Capability i = 0x8090A3
>> 		Standard = CCITT
>> 		Transfer Capability = Speech
>> 		Transfer Mode = Circuit
>> 		Transfer Rate = 64 kbit/s
>> 	Channel ID i = 0xA9839F
>> 		Exclusive, Channel 31
>> 	Calling Party Number i = 0x0180, '03631970XXX'
>> 		Plan:ISDN, Type:Unknown
>> 	Called Party Number i = 0x81, '199151119'
>> 		Plan:ISDN, Type:UnknownsipSPIUpdateRtcpSession: sx79861:
>> started RTP
>> timer in state STATE_SENT_ALERTING
>> 
>> Nov 15 10:06:54.457 CET: ISDN Se0/1/0:15 Q931: RX <- SETUP_ACK pd = 8
>> callref = 0x8D0D
>> 	Channel ID i = 0xA9839F
>> 		Exclusive, Channel 31
>> 
>> 
>> Nov 15 10:06:56.745 CET: ISDN Se0/1/0:15 Q931: RX <- CALL_PROC pd = 8
>> callref = 0x8D0D
> 
> 
> There is no progress indicator indicating that inband information is now
> available.
> So no opening of the audio channel. You can play around with the
progress
> indicators you send out with your setup to manipulate this 
> Try searching for no ringback , no busytones  on the cisco website for
an
> in depth explanation.
> 
> 

Hello,

I configured my dial-peer in this way:
dial-peer voice 1400 pots
 voice cut-through alert
 preference 4
 destination-pattern 199151119
 progress_ind setup enable 1
 no digit-strip
 port 0/0/1:15
!

Now i see the PI reminder:

Nov 15 14:39:07.121 CET: ISDN Se0/1/0:15 Q931: TX -> SETUP pd = 8  callref
= 0x1C5C 
	Bearer Capability i = 0x8090A3 
		Standard = CCITT 
		Transfer Capability = Speech  
		Transfer Mode = Circuit 
		Transfer Rate = 64 kbit/s 
	Channel ID i = 0xA9839F 
		Exclusive, Channel 31 
	Progress Ind i = 0x8181 - Call not end-to-end ISDN, may have in-band info

	Calling Party Number i = 0x0180, '03631970353' 
		Plan:ISDN, Type:Unknown 
	Called Party Number i = 0x81, '199151119' 
		Plan:ISDN, Type:Unknown
Nov 15 14:39:07.133 CET: ISDN Se0/1/0:15 Q931: RX <- SETUP_ACK pd = 8 
callref = 0x9C5C 
	Channel ID i = 0xA9839F 
		Exclusive, Channel 31
Nov 15 14:39:08.253 CET: ISDN Se0/1/0:15 Q931: RX <- CALL_PROC pd = 8 
callref = 0x9C5C

Looking at this:
http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a0080094c33.shtml#progresstones
I would expect the call to be cutted-throug after the SETUP_ACK has been
received.
Anyway I have the same problem, no audio i sent to my phone before the
CONNECT message.

Thank You