[cisco-voip] PRI/VOIP troubles

[Dave Willams]

Hey gang,

Two part ISDN question for those willing to take a moment.....

In my lab I have a 5300 (two Ethernet interfaces, DSP card, and T1/PRI
card), a channel bank, and an analog phone. What I’m attempting to do
is connect to a voip peer (2600) over one of the Ethernet interfaces on
the 5300. I can’t seem to get the 5300 to handle the incoming call
properly (switch the call out the Ethernet interface). My dial peers
seem to be correct. When I set serial 0:23 “isdn incoming-voice data”
a connection is established (using a Q.931 debug) but the line is quite
and 10 seconds later disconnects. When I try to set it to “isdn
incoming-voice modem” I get a “Requested circuit/channel not
available” Q.931 error. When I don’t set it at all, I get a “Bearer
capability not implemented”.

Question #1 - What exactly is the “isdn incoming-voice” command used
for? I’ve read some info on the “data”DoV) option, but I’m still
unclear as to which one I should use in my situation. Most examples use
the “modem” option, but I’m not sure why. 


Question #2 - does anyone have any suggestions? My part of my config is
below:


 voice service pots
!
voice service voip
 fax protocol t38 ls-redundancy 0 hs-redundancy 0
!
voice class codec 1
 codec preference 1 g711ulaw
 codec preference 2 g729r8
 codec preference 3 g711alaw
!
!
!
!
!
fax interface-type vfc
mta receive maximum-recipients 0
!
controller T1 0
 framing esf
 clock source line primary
 linecode b8zs
 pri-group timeslots 1-24
!
interface Serial0:23
 no ip address
 isdn switch-type primary-ni
 isdn incoming-voice data
 isdn T310 40000
!
!
interface FastEthernet0
 ip address 10.0.1.91 255.255.255.0
 duplex auto
 speed auto
!
!
!
voice-port 0:D
!
dial-peer voice 1 pots
 destination-pattern 2153598
 port 0:D 
!
dial-peer voice 4 voip
destination-pattern 3145172  ← number dialed from the analog phone 
session target ipv4:10.0.1.197  <-- IP address of 2600
!
gateway
!
!

I don't see any udp packets being sent to the 2600. Although a PRI call
using the DoV option is up.


Thanks in advance,
Dave