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New Contributor III

Busy out channels in Dual PRI

Would someone be able to provide guidance on busying out channels on a PRI to test that calls are flowing to the second PRI? I followed the example on SIP to Dual PRI and am able to receive and place calls just not sure how to test the calls going to the second PRI if the first is full.

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New Contributor II

Re: Busy out channels in Dual PRI

Garabedy,

You could add an overflow route to your second sip trunk in your call controller to test, you could MMB the first trunk in the call controller and then test in the adtran by showing isdn resources to see b-channels in use.

Patrick

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New Contributor III

Re: Busy out channels in Dual PRI

Could you explain this in more detail, I have the same issue with 3 PRI's on a NetVanta 640. Only I am the SIP provider through my Soft switch.

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New Contributor III

Re: Busy out channels in Dual PRI

 

Patrick,

 

Thank you for your response. Do you know, If I used the sample explained in the  “ Total Access 9XXe - SIP to dual PRIs sample configuration” document, as far as the Adtran is concerned it  should overflow to the second PRI, it just a matter of testing on the call controller?

 

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New Contributor II

Re: Busy out channels in Dual PRI

Normrr,

What type of soft-switch?

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New Contributor II

Re: Busy out channels in Dual PRI

Garabedy,

In the adtran unit using firmware R10.9.6

Isdn-group 1

Connect pri 1

Connect pri 2

Pri 1 will overflow to 2.

How is the pbx set to route calls?

How is the call controller set for call limit on sip trunk?

How is call route set on that trunk group?

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New Contributor III

Re: Busy out channels in Dual PRI

Here is my configuration. Your help is really appreciated

!

!

! ADTRAN, Inc. OS version R11.12.0.E

! Boot ROM version R10.9.3.B1

! Platform: Total Access 908e (3rd Gen), part number 4243908F2

! Serial number CFG1395244

!!

!

interface eth 0/1

  ip address dhcp

  media-gateway ip primary

  no shutdown

!

!

interface eth 0/2

  no ip address

  shutdown

!

!

!

interface gigabit-eth 0/1

  no ip address

  shutdown

!

!

!

!

interface t1 0/1

  shutdown

!

interface t1 0/2

  shutdown

!

interface t1 0/3

  tdm-group 1 timeslots 1-24 speed 64

  no shutdown

!

interface t1 0/4

  lbo short 15

  tdm-group 1 timeslots 1-24 speed 64

  no shutdown

!

!

interface pri 1

  role network b-channel-restarts enable

  connect t1 0/3 tdm-group 1

  digits-transferred 4

  no shutdown

!

interface pri 2

  role network b-channel-restarts enable

  connect t1 0/4 tdm-group 1

  digits-transferred 4

  no shutdown

!

!

interface fxs 0/1

  shutdown

!

interface fxs 0/2

  shutdown

!

interface fxs 0/3

  shutdown

!

interface fxs 0/4

  shutdown

!

interface fxs 0/5

  shutdown

!

interface fxs 0/6

  shutdown

!

interface fxs 0/7

  shutdown

!

interface fxs 0/8

  shutdown

!

!

interface fxo 0/0

  shutdown

!

!

isdn-group 1

  connect pri 1

  connect pri 2

!

!

!

!

!

!

!

!

!

!

!

ip route 0.0.0.0 0.0.0.0 10.1.1.1

!

no tftp server

no tftp server overwrite

http server

no http secure-server

no snmp agent

no ip ftp server

no ip scp server

no ip sntp server

!

!

!

!

!

!

!

!

sip

sip udp 5060

no sip tcp

no sip tls

!

!

!

voice feature-mode network

voice forward-mode network

!

!

!

!

!

!

!

!

voice dial-plan 1 local NXX-XXXX

voice dial-plan 2 long-distance 1-NXX-NXX-XXXX

!

!

voice email-list emergency

  description "Emergency Call Placed"

  sender

  address

!

!

!

voice codec-list VOICE

  default

  codec g711ulaw

!

voice codec-list FAXMODEM

  codec g711ulaw

!

!

!

voice trunk T01 type sip

  description "SIP"

  match dnis "91-NXX-NXX-XXXX" substitute "1-NXX-NXX-XXXX"

  sip-server primary xxx

  registrar primary xxx

  register xxxx auth-name "xxx" password "x"

  codec-list VOICE both

  authentication username "xxx" password "xxx"

!

voice trunk T02 type isdn

  description "DSX-1"

  resource-selection linear ascending

  connect isdn-group 1

  no early-cut-through

  match dnis "1xxxxx" substitute "1xx"

  match dnis "1xxxxx" substitute "1xx"

  match dnis "1xxxx" substitute "1xx"

  rtp delay-mode adaptive

  codec-list VOICE

!

!

voice grouped-trunk SIP

  trunk T01

  accept $ cost 0

!

!

voice grouped-trunk ISDN

  trunk T02

  accept xxxxxx cost 0

!

!

!

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New Contributor III

Re: Busy out channels in Dual PRI

I have a Netsapiens

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New Contributor II

Re: Busy out channels in Dual PRI

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

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