Garabedy,
After looking at your configuration, a few things I notice different from mine.
1. On T01 I have max-number-calls 46 (since I am using 2 PRIs with 23 b channels a piece)
2. On ISDN-Group 1 I also have max-channels 46
3. on the PRI interfaces - role network b-channel restarts disabled
! ADTRAN, Inc. OS version R10.9.6.E
! Boot ROM version R10.9.3.B2
! Platform: Total Access 908e (3rd Gen),
!
!
!
interface gigabit-eth 0/1
ip address XXXX XXXXX
media-gateway ip primary
no awcp
no shutdown
no lldp send-and-receive
!
interface t1 0/3
description First PRI
fdl none
tdm-group 1 timeslots 1-24 speed 64
no shutdown
!
interface t1 0/4
description Second PRI
fdl none
tdm-group 1 timeslots 1-24 speed 64
no shutdown
!
!
interface pri 1
description PRI
connect t1 0/3 tdm-group 1
no shutdown
!
interface pri 2
description overflow PRI
connect t1 0/4 tdm-group 1
no shutdown
!
!
!
isdn-group 1
max-channels 46
connect pri 1
connect pri 2
!
!
!
!
timing-source t1 0/3
!
!
!
voice feature-mode network
voice forward-mode network
!
!
!
!
!
!
!
!
!
!
!
!
voice codec-list VOICE
codec g711ulaw
codec g729
!
!
!
voice trunk T01 type sip
description "SIP TRUNK"
sip-server primary XXXXXXXXXXX
registrar primary XXXXXXXX
outbound-proxy primary XXXXXXXXXXX
max-number-calls 46
codec-list VOICE both
authentication username "XXXXXXXXXX" password encrypted "XXXXXXXXXXX"
!
voice trunk T02 type isdn
description "ISDN TRUNKS"
resource-selection circular descending
connect isdn-group 1
no early-cut-through
modem-passthrough
rtp delay-mode adaptive
codec-list VOICE
!
!
voice grouped-trunk "SIP TRUNK GROUP"
trunk T01
accept $ cost 0
!
!
voice grouped-trunk "DUAL PRI"
trunk T02
accept $ cost 0
!
ip rtp symmetric-filter
ip rtp dtmf-relay min-duration 50
!
!
ip rtp quality-monitoring
ip rtp quality-monitoring sip
!
If you'd like to test your overflow, shutdown the first pri link by issuing a shutdown command on interface PRI 1. You can then place a call and use TA908e# show isdn resource to see your call connect or alert on the 2nd pri.
-------------------------------------------------------------------------------
Interface: Channel Trunk: Appearance Slot/Prt: Call
ChannelId State:GID Appearance State B-Channel State
-------------------------------------------------------------------------------
pri 1:0 Reserved:1 T02:11 TAS_Deliveri0/3:19 OutgoingAlerting
pri 2:0 Available --- --- --- ---
pri 2:1 Available --- --- --- ---
pri 2:2 Available --- --- --- ---
pri 2:3 Available --- --- --- ---
pri 2:4 Available --- --- --- ---
pri 2:5 Available --- --- --- ---
pri 2:6 Available --- --- --- ---
pri 2:7 Available --- --- --- ---
pri 2:8 Available --- --- --- ---
pri 2:9 Available --- --- --- ---
pri 2:10 Available --- --- --- ---
pri 2:11 Available --- --- --- ---
pri 2:12 Available --- --- --- ---
pri 2:13 Available --- --- --- ---
pri 2:14 Available --- --- --- ---
pri 2:15 Available --- --- --- ---
pri 2:16 Available --- --- --- ---
pri 2:17 Available --- --- --- ---
pri 2:18 Available --- --- --- ---
pri 2:19 Available --- --- --- ---
pri 2:20 Available --- --- --- ---
pri 2:21 Available --- --- --- ---
pri 2:22 Available --- --- --- ---
If the call does not come in on the 2nd pri with the first one shut down, verify you have operational status of your pri interface
TA908e# show interface Pri 2
you should make sure your PBX and your adtran unit are agreeing on framing, coding, and isdn switch type.
framing and coding are handled on the T1 interface, and isdn switch-type commands are handled on the PRI interface.
on my T1s I use ESF framing, and b8zs coding, and the isdn switch-type is NI2. Yours may be different, but as long as they match you should be fine. Also, I would remove the lbo setting until you test your switch type, framing, and coding.
Make sure when you're finished to issue the no shutdown command back on your PRI 1 interface.
Hope that helps,
Patrick
