[cisco-voip] Help with ISDN VIC2-2BRI-NT/TE cable and configuration

[Lawrence E. Bakst]

I've got a PacBell ISDN line that I've had for years, back before the 
days of DSL. Since DSL arrived it's been hooked up to an Ascend 
Pipeline 75 (with a built-in NT1) and has provided me two POTS lines 
from a single pair for years.

I now want to hook this up to my 3640 to a VIC2-2BRI-NT/TE in a 
NM-HD-2V and use it to send and receive voice calls. I am not 
interested in data access. The ISDN  line seems like a good choice 
for incoming voice calls as it has full supervision via the various 
Q* standards.

Questions:

1. First and foremost can I hook my single pair (2 wire, U interface 
from PacBell) RJ11 into the RJ-45? I really can't tell as all the 
Cisco doc shows 4 wire connections to an NT1 but the doc for this 
card claims "build in NT1".

2. What kind of config do I need to get this running? Is what follows 
even close? If I knew I had the cabling right I could focus on the 
config. I really can't find a good example on the Cisco site, DSL 
Reports, or the web. If someone has a sample config known to work 
with BRI voice that would be great.

isdn switch-type basic-qsig
!
interface BRI1/0
  no ip address
! should the following be basic-ni or basic-qsig
  isdn switch-type basic-ni
  isdn timer t309 30000
  isdn protocol-emulate network
  isdn layer1-emulate network
  isdn spid1 408-XXX-YYYY-0101
  isdn spid2 408-XXX-YYYY-0101
  isdn incoming-voice voice
  isdn supp-service name calling
  isdn T310 120000
  isdn skipsend-idverify
!
interface BRI1/1
  no ip address
  shutdown
  isdn switch-type basic-dms100
  isdn point-to-point-setup
!

4. Do I need both the global "isdn switch-type" and the interface 
"isdn switch-type"?

5. Here is the output of "show interfaces" and "show isdn status" 2 
way. One with the interface configured as isdn switch-type basic-ni 
and the other with isdn switch-type basic-qsig. I am tempted to use 
"basic-ni" Since the Ascend has worked with that switch type although 
the cisco doc seems to recommend "basic-qsig". On the Ascend 
Pipeline-75 the switch type is "Switch Type=NTI".

6. Finally do I need anything special for the "voice-port" config?

Best,

leb

chatter#show interfaces BRI 1/0
BRI1/0 is up, line protocol is down (spoofing)
   Hardware is Voice NT or TE BRI
   MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec,
      reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation VOICE, loopback not set
   Last input never, output never, output hang never
   Last clearing of "show interface" counters never
   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
   Queueing strategy: weighted fair
   Output queue: 0/1000/64/0 (size/max total/threshold/drops)
      Conversations  0/0/16 (active/max active/max total)
      Reserved Conversations 0/0 (allocated/max allocated)
      Available Bandwidth 48 kilobits/sec
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
      0 packets input, 0 bytes, 0 no buffer
      Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
      0 packets output, 0 bytes, 0 underruns
      0 output errors, 0 collisions, 2 interface resets
      0 output buffer failures, 0 output buffers swapped out
      0 carrier transitions
chatter#

chatter#show isdn status
Global ISDN Switchtype = basic-qsig
ISDN BRI1/0 interface
         ******* Network side configuration *******
         dsl 8, interface ISDN Switchtype = basic-ni
     Layer 1 Status:
         DEACTIVATED
     Layer 2 Status:
         TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
         TEI Not Assigned, ces = 1, state = 1(terminal down)
             spid1 configured, no LDN, spid1 NOT acked, spid1 NOT valid
         TEI Not Assigned, ces = 2, state = 1(terminal down)
             spid2 configured, no LDN, spid2 NOT acked, spid2 NOT valid
     Layer 3 Status:
         0 Active Layer 3 Call(s)
     Active dsl 8 CCBs = 0
     The Free Channel Mask:  0x80000003
ISDN BRI1/1 interface
         dsl 9, interface ISDN Switchtype = basic-dms100
     Layer 1 Status:
         SHUTDOWN
     Layer 2 Status:
         Layer 2 NOT Activated
     Layer 3 Status:
         0 Active Layer 3 Call(s)
     Active dsl 9 CCBs = 0
     The Free Channel Mask:  0x00000000
     Total Allocated ISDN CCBs = 0
chatter#config

chatter#show isdn status
Global ISDN Switchtype = basic-qsig
ISDN BRI1/0 interface
         ******* Network side configuration *******
         dsl 8, interface ISDN Switchtype = basic-qsig
          **** Master side configuration ****
     Layer 1 Status:
         DEACTIVATED
     Layer 2 Status:
         TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
     Layer 3 Status:
         0 Active Layer 3 Call(s)
     Active dsl 8 CCBs = 0
     The Free Channel Mask:  0x80000003
ISDN BRI1/1 interface
         dsl 9, interface ISDN Switchtype = basic-dms100
     Layer 1 Status:
         SHUTDOWN
     Layer 2 Status:
         Layer 2 NOT Activated
     Layer 3 Status:
         0 Active Layer 3 Call(s)
     Active dsl 9 CCBs = 0
     The Free Channel Mask:  0x00000000
     Total Allocated ISDN CCBs = 0
chatter#