PRI B-Channel

Can someone remind me what the command is on a gateway to change the state of individual channels? i.e to busy
Thanks

You can use the "isdn service" command as detailed in the following link.
http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_command_reference_chapter09186a00800ca4be.html#4897
Hope this helps. If so, please rate the post.
Brandon

Similar Messages

RTMT Specific PRI Active Channel Graph

Is there a way in RTMT to see the active MGCP PRI B channels for a specific span? It appears the only real time graph is a total count of all the active B channels registered to the cluster consisting of multiple PRIs, nothing span specific. Any pointers or alternate ways of doing this would be greatly appreciated. I have pulled CDR records and translated into line graph averages, but would like to be able to see a specific PRI line graph in real time instead of doing a constant "sh voice call summary" over and over on the gateway. This is my 1st time to post on the Cisco Support forums, be gentle. :)
Thanks,
Paul

Hi pjsooner7,
welcome to the Community.
Try this:
In RTMT > Performance > StandAlone Cluster > <CUCM's IP Addr> > Cisco MGCP Gateways:
- PRIChannelActive
- PRISpanInService
Hope this helps.

Dialin and dialout on the same PRI

Dear all,
we want to configure a 3640 router with a dual e1-pri card to cover following tasks:
- dial-in (X.25) and protocol translation to TCP
- dial-out (protocol translation from TCP to X.25, routing to a dialer)
Unfortunately we have the problem that once dial-in works and once dial-out works but never the two at the same time.
As far as I understood there are several ways to configure dial-in and dial-out:
- dialer pools
- rotary groups
I tested both but none of them worked fine.
The best working was was to add the E1 interface to dialer-pool 1 and define a dialer which uses this pool.
Unfortunately when the E1 is added to a dialer pool the X.25 dial-in does not work anymore (call not accepted).
Please see at the end of the mail the output of "sh ver" and the config part used for dialling.
Any hints, help or sample config very appreciated.
Best regards,
Bernhard Roth
Cisco Internetwork Operating System Software
IOS (tm) 3600 Software (C3640-IS-M), Version 12.3(16a), RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by cisco Systems, Inc.
Compiled Wed 09-Nov-05 21:49 by evmiller
Image text-base: 0x60008B00, data-base: 0x61BFA000
ROM: System Bootstrap, Version 11.1(20)AA2, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
ROM: 3600 Software (C3640-IS-M), Version 12.3(16a), RELEASE SOFTWARE (fc2)
router uptime is 6 minutes
System returned to ROM by power-on
System restarted at 19:32:41 MEZ Mon Jan 23 2006
System image file is "flash:c3640-is-mz.123-16a.bin"
cisco 3640 (R4700) processor (revision 0x00) with 120832K/10240K bytes of memory.
Processor board ID 26877946
R4700 CPU at 100MHz, Implementation 33, Rev 1.0
MICA-6DM Firmware: CP ver 2950 - 9/9/2003, SP ver 2950 - 9/9/2003.
Channelized E1, Version 1.0.
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
Primary Rate ISDN software, Version 1.1.
1 FastEthernet/IEEE 802.3 interface(s)
60 Serial network interface(s)
60 terminal line(s)
2 Channelized E1/PRI port(s)
DRAM configuration is 64 bits wide with parity disabled.
125K bytes of non-volatile configuration memory.
24576K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102
interface Serial1/0:15
description ISDN PRI D-Channel interface 0
no ip address
encapsulation x25 dce
dialer pool-member 1
isdn switch-type primary-net5
isdn incoming-voice modem
isdn disconnect-cause busy
no cdp enable
interface Dialer0
no ip address
encapsulation x25
dialer pool 1
dialer idle-timeout 30
dialer string 089555112
dialer max-call 1
dialer-group 1
no cdp enable
x25 routing
x25 route 987654321 interface Dialer0
translate tcp 10.xx.xx.xx port 1111 stream x25 987654321 quiet

Thank you, this worked but suddently I have another problem:
When an incoming X.25 connection is established and I do a pad call on any unknown address "pad 987654321" the router tries to connect this host via the dialed-in connection (the dialled-in device has no address). Any way to disable this?
Any connection attempt to an unknown X.121 address shall be rejected.
X.25 routing has to be switched on in order to let the protocol translations work correctly.
"x.25 route default clear" does not work, too.
Best regards,
Bernhard Roth

Load balancing & reduncey with 2 Pri Lines

Dear Friends.......
I have a requirement of VOIP setup and I have 2 Pri Lines of MPLS cloud.
I have 3 r routers, router1 is for IPS 1 (Pri 1), router 2 is for ISP 2 (Pri 2) and router 3 is for Load balancing.
plz explain me how to config load balancing & redundancy....
my another question is E1 Leased line will cupport voip?
ISP 1 IP_172.16.10.1/24
ISP 2 IP_170.16.5.1/24....
Plz explain with config,....
Thanks & Regards,
Srinivas. N

Hi Alex
Sorry, I have 2 PRIs, PRI one is for main line & PRI two is for backup line, both should work as a load balancing... they are for placing voice calls to the PSTN ..
My concept is I have 3 routers... Router 1 is for PRI one, Router 2 is for PRI two & Router three is for load balancing...
Plz explain me how to config three router...
I hope In router one need to config with pri voice channels, In router two need to config with pri voice channels & In router three need to config load balancing...
Thanks & Regards,
Srinivas. N.

3825--NM-2CE1T1-PRI

This (2) Port NM should allow to be configured for either Data T1 or Voice T1 or just the Data Only.
Please Clarify

Hi Ali,
This module is "Data Only". Have a look at the description for the NM-1CE1T1-PRI;
Module as "Data Only",
The versatility of Cisco 2610-51XM, 2800, 2691, 3660, 3700 and 3800 series routers is demonstrated by their broad support of E1/T1 connectivity and Integrated Services Digital Network Primary Rate Interfaces (ISDN PRI). Customers continue to deploy E1 and T1 circuits for Wide Area Network (WAN) connectivity, ISDN dial-backup, and digital modem termination in the Power Branch Office Environment. Cisco now makes it possible to terminate T1 and E1 PRI connections in a single network module. Available in single and dual port models, the NM-1CE1T1-PRI and NM-2CE1T1-PRI cards coupled with Cisco 2610-51XM, 2800, 2691, 3660, 3700 and 3800 Series routers, enhance and simplify customers' WAN connectivity options
The Cisco E1/T1 ISDN PRI Network Module's integrated channel service unit (CSU) provides direct connection to the Telecommunications network, thus allowing customers to consolidate customer premises equipment (CPE). This provides multifunction dial access aggregation, routing functionality, VPN and firewall security, and other capabilities right inside the Cisco router in power branch office environments. Both the 1-port and 2-port versions offer support for balanced and unbalanced E1 connectivity and conform easily to customers' specific applications.
The Cisco E1/T1 ISDN PRI network modules also supply connectivity for internal digital modems in the Cisco 3660, 3700 and 3800 series routers, with connectivity options for PRI, T1 channel associated signaling (T1-CAS), and E1-CAS R2 signaling. This provides for a high concentration of V.92-compatible modems, while still allowing expandability for other critical services.
FEATURES AT-A-GLANCE
Cisco IOS Software configurable for T1 or E1 operation
Balanced or unbalanced E1 termination in the same module
Integrated CSU/DSU (channel service unit/data service unit) per port
Full or fractional E1/T1-can be fully channelized
***Supports PRI for data, T1-CAS, and E1-CAS R2 signaling
E1 unframed and framed modes (G.703/G.704) available
Interoperates with NM-xDM digital modem network modules
Bantam (tty) jacks for easy network monitoring
V.54 loopback compatible
Supported on Cisco 2610-51XM, 2800, 2691, 3660, 3700 and 3800 Series routers
Online insertion and removal (OIR) supported on Cisco 3660 3745 and 3845 routers
On-board expansion slot for future technologies
From this doc;
http://www.cisco.com/en/US/products/hw/modules/ps2797/products_data_sheet09186a0080189f95.html
See also, this good doc;
Relevant Interfaces and Modules
http://www.cisco.com/en/US/products/ps5854/products_relevant_interfaces_and_modules.html
Hope this helps!
Rob

3845 MGCP Pri E1 CCM 7

I am trying to register my MGCP gateway for use with 10 PRI E1 channels
But debug mgcp error dives the following
000132: *Dec 3 16:47:03.551 GMT: //-1/xxxxxxxxxxxx/MGCP/mgcp_mp_get_not_entity(830):[lvl=2]Invalid parameter (pkt 0x67A43378 pkt->mgcp_parm_lines 0x00000000)
How do I find what parameter this is.
show ccm
No configurations downloaded
Current state: Downloading XML file
Configuration Download statistics:
        Download Attempted             : 1
          Download Successful          : 0
          Download Failed              : 0
          TFTP Download Failed         : 19
        Configuration Attempted        : 0
          Configuration Successful     : 0
          Configuration Failed(Parsing): 0
Any help is appreciated.

My host name was to long reduced it and now my gateway has registered

How to fake ISDN b-channels as busy out of the pri-group timeslots definition ?

Hi, Cisco Support Community,
This is my first post here, so I hope I won't make mistakes... First, thanks for reading me.
I wanted to reuse an old 2811 to act as a SIP gateway on an ISDN primary rate interface. This router is featured with 2 PVDM2-8 modules, so that we're able to handle up to 16 simultaneous calls. So I ordered a pri with 10 channels, which is supposed to be more than enough for our usage.
Everything works fine, excepted that I discovered that the PRI which was delivered to us is a full one, meaning 30 B channels.
As a result, as incoming calls are dispatched round robin by the isdn line provider, when incoming calls start to be presented on b-channel 16, the call is rejected by the router with a "channel unavailable" message... The only way to have a successful incoming call is then to have 15 more unsuccessful tries so that the calls are presented on B-channel 1 again :-/
I have to wait for monday to deal with the line provider to sort this out, but meanwhile, I was trying to find a workaround.
My first try was to use B-channel negotiation on the serial interface (isdn negotiate-bchan resend-setup), but it seems that b channel negociation is disabled on the provider side.
So the other obvious solution would be to fake channels 17 to 31 as busy (isdn busy b_channel xx) ... But as the pri-group timeslots are 1-16, the related serial interface is serial0/0/0:15, and I'm unable to set busy B-channels over 15. And of course, I have no way to define pri-group timeslots 1-31 as I have not enough DSPs to handle more than 16.
I also tried to use the ds0 busyout directive within the E1 controller configuration, but while the command is accepted, it does not appear in the configuration
Below is my running configuration... If some of you can help, this would be much appreciated. Current IOS on the router is Version 12.3(11)T3
Kind regards,
Philippe Martorell
--- cut here ---
Current configuration : 4311 bytes
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname RTR-xyz-abc
boot-start-marker
boot-end-marker
enable secret 5 xx
username user1 privilege 15 secret 5 xx
username user3 privilege 15 secret 5 xx
username user1 privilege 15 secret 5 xx
network-clock-participate wic 0
network-clock-select 1 E1 0/0/0
aaa new-model
aaa authentication login default local
aaa session-id common
ip subnet-zero
ip cef
ip name-server 8.8.8.8
ip name-server 8.8.4.4
no ftp-server write-enable
isdn switch-type primary-net5
voice-card 0
dspfarm
no local-bypass
voice call send-alert
voice call carrier capacity active
voice rtp send-recv
voice service voip
fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback cisco
sip
no call service stop
voice class codec 1
codec preference 1 g711ulaw
codec preference 2 g711alaw
controller E1 0/0/0
pri-group timeslots 1-16
translation-rule 1
Rule 1 ..% 900 international international
Rule 2 ..% 90 national national
translation-rule 2
Rule 1 ..% 02212345
interface FastEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0/0$
ip address 172.16.31.200 255.255.255.0
duplex auto
speed auto
no mop enabled
interface FastEthernet0/1
ip address 10.0.1.200 255.255.255.0
shutdown
duplex auto
speed auto
interface Serial0/0/0:15
no ip address
isdn switch-type primary-net5
isdn incoming-voice voice
isdn map address .* plan unknown type unknown
isdn negotiate-bchan resend-setup
isdn outgoing-voice info-transfer-capability 3.1kHz-audio
no cdp enable
ip default-gateway 172.16.31.254
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.31.254
no ip http server
snmp-server community xx RO
control-plane
voice-port 0/0/0:15
no echo-cancel enable
playout-delay maximum 170
playout-delay nominal 80
playout-delay minimum low
cptone CH
bearer-cap 3100Hz
no mgcp piggyback message
dial-peer voice 1 pots
application session
incoming called-number .
direct-inward-dial
dial-peer voice 456389160 voip
destination-pattern 6[0-8]
translate-outgoing calling 1
translate-outgoing called 2
rtp payload-type cisco-codec-fax-ind 124
rtp payload-type nte 96
no modem passthrough
voice-class codec 1
session protocol sipv2
session target ipv4:10.200.3.21
dtmf-relay rtp-nte
fax rate disable
no vad
dial-peer voice 999999 voip
answer-address 0.
rtp payload-type cisco-codec-fax-ind 124
rtp payload-type nte 96
no modem passthrough
voice-class codec 1
session protocol sipv2
dtmf-relay rtp-nte
fax rate disable
fax protocol pass-through g711ulaw
no vad
dial-peer voice 9912 pots
destination-pattern 99123T
progress_ind alert enable 8
port 0/0/0:15
dial-peer voice 9920 pots
destination-pattern 99222T
clid restrict
clid restrict
port 0/0/0:15
dial-peer voice 456389162 voip
destination-pattern 69
translate-outgoing calling 1
translate-outgoing called 2
rtp payload-type cisco-codec-fax-ind 124
rtp payload-type nte 96
modem passthrough nse codec g711ulaw
voice-class codec 1
session protocol sipv2
session target ipv4:10.200.3.21
dtmf-relay h245-alphanumeric
fax-relay ecm disable
fax rate 9600
fax nsf 000000
fax protocol t38 ls-redundancy 2 hs-redundancy 2 fallback none
no vad
gateway
timer receive-rtp 1200
sip-ua
max-forwards 15
sip-server ipv4:10.200.3.21
banner login ^CCC
WARNING: This is a private network.
Unauthorized access is prohibited.
Use of this system constitutes your
consent to interception, monitoring,
and recording for official purposes
of information related to such use,
including criminal investigations.
^C
line con 0
line aux 0
line vty 0 4
password 7 xx
scheduler allocate 20000 1000
end

Hi,
Thanks for your answer, but unfortunately, this did not help. commands ds0 busyout are accepted, but not taken into account :
RTR-505-012#conf t
*Apr 7 10:23:04.361: %SYS-5-CONFIG_I: Configured from console by sysadmin9 on vty0 (172.16.0.88)
Enter configuration commands, one per line. End with CNTL/Z.
RTR-505-012(config)#controller e1 0/0/0
RTR-505-012(config-controller)#ds0 busyout 17-31
RTR-505-012(config-controller)#do sh run | begin controller
controller E1 0/0/0
pri-group timeslots 1-16
And the "isdn service b_channel state" commands in the serial interface context are rejected
RTR-505-012(config-controller)#interface Serial0/0/0:15
RTR-505-012(config-if)#isdn service b_channel 16 state 2
%The service state of reserved channel 16 on DSL 0 can not be changed.
While the "show isdn service" status shows channels 16 to 30 are out of service, some incoming calls are still directed to these channels by the provider :
RTR-505-012#show isdn service
PRI Channel Statistics:
ISDN Se0/0/0:15, Channel [1-31]
Configured Isdn Interface (dsl) 0
Channel State (0=Idle 1=Proposed 2=Busy 3=Reserved 4=Restart 5=Maint_Pend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3
Service State (0=Inservice 1=Maint 2=Outofservice 8=MaintPend 9=OOSPend)
Channel : 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
State : 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
*Apr 7 10:20:45.509: %ISDN-6-CHAN_UNAVAILABLE: Interface Se0/0/0:15 Requested Channel 19 is not available
*Apr 7 10:20:53.353: %ISDN-6-CHAN_UNAVAILABLE: Interface Se0/0/0:15 Requested Channel 20 is not available
I'll try to sort this out with the provider today.
Thanks,
Philippe.

ISDN E1 PRI incoming calls busy out after 2nd b channel picks up

I have an ISDN E1 PRI line coming in from the Telco. D Channel comes up nicely and B channels accept calls, but only the first two calls. Once two callers are online, any further incoming calls get a busy tone. ISDN Debug data reports:
**ERROR**: call_incoming: Remote Protocol Error: No b channel assigned by switch, call id 0xCE
Hardware I'm using? Cisco 2650, 12.3(7T) and NM-HDV, VWIC-2MFT-E1-DI
Anybody please help?

Problem sorted - believe it or not, it was the telco. They changed their switch setting for the line to preferrable B channel - and voila!
Thanks,
Brian

Controlling Multiple PRI T-1's with 1 d Channel

We are connecting a Redcom IGX to three Cisco 3745 routers (12.4(7g) ios) with 13 T-1's using MGCP and a Call manager running 4.1. We just converted to PRI using 4ESS between the two. The redcom has a way to control (span) up to 5 T-1's using one D Channel, is it possible to control (span) multiple T-1's using one D Channel on the call manager?

Hi Justin,
Teodor is correct here (nice one T!) NFAS is only currently supported with h.323 not MGCP.
Here is a Cisco note indicating this as well as a couple of config docs;
From Esteban @ Cisco;
http://www.ciscotaccc.com/kaidara-advisor/voice/showcase?case=K10070486
From Milan;
http://www.cisco.com/warp/public/793/access_dial/quadt1_nfas.html
From Chris;
http://www.cisco.com/warp/public/793/access_dial/quadt1_nfas.html
Hope this helps!
Rob

Can CVP Check availability of free channel in PRI and route the call?

We have UCCE setup with ICM 7.x CVP 7.x & CUCM 6.x. There is a requirement from operations team , an inbound call queued to a skillgroup for more than 30 second should be transferred to an external number through T1 PRI.And if no free channel is available on PRI call has to be queued back to skillGroup. We are able to achieve this using IP IVR using Custom call Transfer node . Iam not sure how can we achieve the same using CVP. Is this achievable through CVP /ICM scripting ? If yes how?

Hi,
It is possible in CVP to route the call back to an external number. For this you would need to configure a label (Probably the number to which you want to send). If the call is in queue for more than 30 seconds you can send back the label configured to CVP and from CVP you can point a static route to the Egress gateway through which the call can go to the T1 PRI
Regards,
Dass
Please rate useful posts

Why do we need to assign ip for the D channel ISDN-PRI

Why do we need to assign ip address to the D channel (signaling ) when we configure ISDN-PRI in the example below :
http://www.cisco.com/univercd/cc/td/doc/product/access/ap/ap_ts3/ap_ts3sw/apswisd.htm
<quote>
Step 1:Specify the D channel of the first Primary Rate Interface (PRI):
AS01(config)# interface Serial 0:23
AS01(config-if)#
Step 2: Assign an IP address and subnet mask to the interface:
AS01(config-if)# ip address 172.16.254.253
</quote>
Regards

You can assing one there, and / or on dialer interfaces. It depends on what you are doing.
These will be the address used by PPP when it runs on the B-channels.

How do I find out how many B channels on my PRI line.

We recently upgraded from 8 lines to 23 on our PRI, and want to confirm that the telco has indeed added the lines. We have the PRI line into a Cisco 3640 router.

"sh isdn status" and "sh isdn
service"; look for all of your
B channels to be in service.

Configure 2801 for 15 channel PRI

I'm new to configuring PRI's so excuse me if there is an obvious answer to my question. I recently purchased CUCM Business Edition and a 2801 router. I've configured the CM and the router and now have outbound calling working but cannot call in to any of the DID's. On the controller I did
pri-group timeslots 1-15 service mgcp
and i want to know if anyone knows if that is correct for a 15 channel partial PRI. Also if anyone has any ideas why I'd be able to make calls out but not receive calls. Any help greatly appreciated.
Here is part of the router config:
controller T1 0/1/0
framing esf
linecode b8zs
pri-group timeslots 1-15,24 service mgcp
interface FastEthernet0/0
ip address 172.16.6.1 255.255.255.0
speed 100
full-duplex
interface FastEthernet0/1
no ip address
duplex auto
speed auto
interface Serial0/1/0:23
no ip address
isdn switch-type primary-4ess
isdn incoming-voice voice
isdn bind-l3 ccm-manager
no cdp enable
ip classless
ip http server
ip http access-class 23
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
control-plane
disable-eadi
voice-port 0/1/0:23
ccm-manager mgcp
ccm-manager music-on-hold
ccm-manager config server 172.16.6.2
ccm-manager config
mgcp
mgcp call-agent 172.16.6.2 2427 service-type mgcp version 0.1
mgcp dtmf-relay voip codec all mode out-of-band
mgcp rtp unreachable timeout 1000 action notify
mgcp modem passthrough voip mode nse
mgcp package-capability rtp-package
no mgcp package-capability res-package
mgcp package-capability sst-package
no mgcp package-capability fxr-package
mgcp package-capability pre-package
no mgcp timer receive-rtcp
mgcp sdp simple
mgcp rtp payload-type g726r16 static
mgcp profile default
line con 0

Thanks for the help, when i do debug isdn q931 or 921 there is no activity until i try to call one of my numbers, then i get:
2801VGW#debug isdn q931
debug isdn q931 is ON.
2801VGW#
*Jul 4 14:18:59.229: ISDN Se0/1/0:23 Q931: RX <- SETUP pd = 8 callref = 0x0A92
Bearer Capability i = 0x8090A2
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Called Party Number i = 0x80, '16619'
Plan:Unknown, Type:Unknown
*Jul 4 14:18:59.233: ISDN Se0/1/0:23 Q931: TX -> RELEASE_COMP pd = 8 callref =
0x8A92
Cause i = 0x8081 - Unallocated/unassigned number
and
2801VGW#debug isdn q921
debug isdn q921 is ON.
2801VGW#
*Jul 4 14:21:03.089: ISDN Se0/1/0:23 Q921: User RX <- INFO sapi=0 tei=0, ns=6 n
r=6
*Jul 4 14:21:03.093: ISDN Se0/1/0:23 Q921: User TX -> RR sapi=0 tei=0 nr=7
*Jul 4 14:21:03.097: ISDN Se0/1/0:23 Q921: User TX -> INFO sapi=0 tei=0, ns=6 n
r=7
*Jul 4 14:21:03.105: ISDN Se0/1/0:23 Q921: User RX <- RR sapi=0 tei=0 nr=7
Thanks

PRI channel busy issue , even when there are no active calls

Hi All ,
i using VWIC-2MFT - E1 CARD with VG. one PRI is working fine but on another PRI we are facing busy channel problem , even when there is no active calls , actually channels are not being free after disconnecting call. when we restart the gateway its startworking for some time ...
i already replaced that card .
please advice

I believe that this post should be made to the Unified Communications and Video forum.
Would please you repost to that group.
Thanks

Channel seperation in PRI

Hi,
i have a router with one pri and one bri. i want to seperate two channels from pri to bri for connecting video conference box. is there a configuration example and is there any restrictions ?
Regards
umit

hi
Afaik u can create seperate dialer interfaces and bind them under the pri interface,under the pri interface try configuring this ..
interface BRI1
dialer pool-member 3 max-link 2
Dialer pool-member is the dialer pool configured .
regds

PRI B-Channel

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