[cisco-nas] ISDN calls not making it to NM-6DM

[joshd]

If you just want to make it work, you can configure your IP stuff on the
serial1/0:15 interface and the call should terminate there.  ISDN to ISDN
like.

Not sure how you would simulate a real analog modem type call from the 1841
side with what you have.

I could be wrong though, been a while...

jd.

On Fri, Jan 30, 2015 at 5:32 PM, Tom Storey <tom at snnap.net> wrote:

> Hi Mark, did not expect such a quick response!
>
> Indeed it is originating from the 1841 as 8890.
>
> I also re-configured the 1841 to do DoV, where the bearercap changed to
> 0x8090A3, and this was also seen as the incomming bearercap on the 3825.
>
> I was under the impression from my reading that the NM-xDM could also
> terminate ISDN data calls, or have I got that wrong?
>
> Cheers!
>
> On 30 January 2015 at 23:27, Mark Johnson (mljohnso) <mljohnso at cisco.com>
> wrote:
>
>>  A bearer cap of 0x8890 means the call is digital, not analog, so the
>> call is not being passed to a modem.  Your emulating network in between
>> must be mucking with the bearer cap (check out debug on the 1841 to verify
>> that it’s not originating at 8890).
>>
>>  mark
>>
>>   From: Tom Storey <tom at snnap.net>
>> Date: Friday, January 30, 2015 at 3:13 PM
>> To: "cisco-nas at puck.nether.net" <cisco-nas at puck.nether.net>
>> Subject: [cisco-nas] ISDN calls not making it to NM-6DM
>>
>>   Hi everyone.
>>
>>  Playing around with some old hardware in a lab, trying to get some ISDN
>> calls originated from an 1841 with a WIC-1B-S/T-V3 to be answered on a 3825
>> with a NM-6D and NM-CE1T1-PRI.
>>
>>  Heres my config:
>>
>>  controller E1 1/0
>>  pri-group timeslots 1-6,16
>> !
>> interface Serial1/0:15
>>  no ip address
>>  encapsulation ppp
>>  isdn switch-type primary-net5
>>  isdn incoming-voice modem 64
>>  isdn bchan-number-order ascending
>> !
>> interface Group-Async0
>>  ip unnumbered Loopback0
>>  ip nat inside
>>  ip virtual-reassembly in
>>  encapsulation ppp
>>  peer default ip address pool dialup
>>  async mode interactive
>>  no keepalive
>>  ppp authentication chap callin
>>  group-range 2/0 2/5
>> !
>> line 2/0 2/5
>>  modem InOut
>>  autoselect ppp
>> !
>>
>>  And heres what I see when an ISDN call comes in:
>>
>>  *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: RX <- SETUP pd = 8
>>  callref = 0x0183
>> Bearer Capability i = 0x8890
>> Standard = CCITT
>> Transfer Capability = Unrestricted Digital
>> Transfer Mode = Circuit
>> Transfer Rate = 64 kbit/s
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> Calling Party Number i = 0x80, '0733944124'
>> Plan:Unknown, Type:Unknown
>> Called Party Number i = 0x80
>> Plan:Unknown, Type:Unknown
>> *Jan 30 23:31:24.963 UTC: ISDN Se1/0:15 Q931: Received SETUP  callref =
>> 0x8183 callID = 0x01E5 switch = primary-net5 interface = User
>> *Jan 30 23:31:24.971 UTC: %ISDN-6-CONNECT: Interface Serial1/0:0 is now
>> connected to 0733944124 N/A
>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CALL_PROC pd = 8
>>  callref = 0x8183
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> *Jan 30 23:31:24.971 UTC: ISDN Se1/0:15 Q931: TX -> CONNECT pd = 8
>>  callref = 0x8183
>> Channel ID i = 0xA98381
>> Exclusive, Channel 1
>> *Jan 30 23:31:24.979 UTC: ISDN Se1/0:15 Q931: RX <- CONNECT_ACK pd = 8
>>  callref = 0x0183
>>
>>  So as far as I can tell the call comes in and establishes fine, but
>> even with "debug modem" and a couple of other debugs on, I dont see any
>> activity regarding connection to a modem. When I dial in from an analogue
>> modem it works just fine.
>>
>>  FWIW I am using the 3825 as a PSTN simulator as well. The 1841 is
>> connected to a VIC2-2BRI-NT/TE emulating network, and a dialpeer connects
>> calls to a VWIC2-2MTF-E1 which is also emulating network and is connected
>> to the NM-CE1T1-PRI.
>>
>>  Wondering if any one can provide any pointers to help me out. Am I
>> missing something obvious?
>>
>>  Let me know if you require more information.
>>
>>  Thanks
>> Tom
>>
>
>
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