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Calls to PSTN from IP Phone. Outbound calls not working.

RedReddington
Level 1
Level 1

‎01-21-2015 12:48 PM - edited ‎03-17-2019 01:41 AM

Longtime lurker, First time poster. I hope to contribute alot of my other knowledge here in other areas. I am very technical, Worked with a lot of Data stuff. LAN/WAN etc Cisco ASA but never set up a phone system. More of a personal challenge which might replace some aging phone systems. I have a plethora of Cisco equipment at my disposal.IP Phones - 7906,7940,6921,6941,6945 etc etc. Those are not the issue. I am interested in getting a working system either on a 2901 with an ISM Interface or on a 887VA for small remote sites (Up to 5 phones say).

I am not at the lab now so I cant post configs but I wanted to post so I could go in fresh and attack this issue as its been bugging me for days.

So far I have working.....

  • Extensions working 100x,100x, etc etc

  • The phones boot up, Get an IP address correctly.

  • They find the tftp server on the router and download and load the correct loads file for the model.

  • The calls can quite happily sit there all day and call between themselves.

  • Calls inbound work with a longest idle group, using a pilot number from the ISDN line itself

  •  

  •  

 

I have an ISDN in the UK provided by BT. This works fine we have had an ISDN tester on it so the line dials in and out fine with that.

The ISDN line is either attached to a EHWIC card on the 2901 or on the 887VA attached to the interface BRI 2. Both exhibit the same issue, cant get external calls to route onto the PSTN.

 

What I want to happen is to basically say dial a 9 then if you detect that as the leading digit route this OUT of the ISDN onto the public PSTN network. I have been through SO many forum posts on here and other guides and I CANNOT seem to get this to work. When I attempt this....

 

debug isdn q931
debug isdn q921
isdn test call interface BRI 2 <<<NUMBER>>>

I get the error ....

Cause i = 0x8281 - Unallocated/unassigned number

 

 

 

 

Be as technical as you like, I am quite verse with Cisco lingo. debugging etc etc. Can someone give me the steps I need to do to get this working. I presume all I need is the right dial plan? ...... Again I have tried many many different combinations of this. I presume that the voice-port x is a virtual port number?

 

 

 

 

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8 Replies 8

Chris Deren
Hall of Fame
Hall of Fame

‎01-21-2015 01:01 PM

Do you have the dial peer configured, something like:

dial-peer voice 100 pots

 destination-pattern 9T

 port X/Y/Z:0 (your ISDN port)

0 Helpful

RedReddington
Level 1
Level 1
In response to Chris Deren

‎01-21-2015 01:15 PM

Yeah tried that, I presume I can just use it as....

 

dial-peer voice 100 pots

 destination-pattern 9T

 port 1

 

Port 1 is the voice-port 1, Am I correct? Can this be a physical interface? I am at a loss as why some people use voice-port 1 for this....

 

 

0 Helpful

Chris Deren
Hall of Fame
Hall of Fame
In response to RedReddington

‎01-21-2015 01:18 PM

You said it's ISDN circuit which would not be "1", it would be something like "1:15" assuming PRI ISDN circuit on E1.  Can you post "sh run" and "sh diag" 

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RedReddington
Level 1
Level 1
In response to Chris Deren

‎01-21-2015 01:24 PM

I can do when I am back at the lab.

 

However all I know say for example my ISDN line is physically plugged into Interface BRI 2 on the 887VA.

 

Hope that helps!!

0 Helpful

RedReddington
Level 1
Level 1
In response to Chris Deren

‎01-21-2015 01:35 PM

How could I "tell" which port to use, Then I am guessing it would be as simple as

dial-peer voice 100 pots

 destination-pattern 9T

 port 2

0 Helpful

RedReddington
Level 1
Level 1
In response to Chris Deren

‎01-22-2015 12:51 AM

Config ........

 

clock set 08:31:00 22 jan 2015


conf t
no ip domain-lookup
isdn switch-type basic-net3
interface Vlan1
ip address 192.168.1.17 255.255.255.0
no shutdown
interface FastEthernet0
switchport access vlan 1
exi

ip dhcp excluded-address 192.168.1.1 192.168.1.19
ip dhcp excluded-address 192.168.1.231 192.168.1.254

ip dhcp pool TestLab
network 192.168.1.0 255.255.255.0
domain-name testlab.local
dns-server 192.168.1.1 192.168.1.2
default-router 192.168.1.1
netbios-name-server 192.168.1.1 192.168.1.2
option 150 ip 192.168.1.17
lease 31

tftp-server flash:SCCP41.9-2-1S.loads
tftp-server flash:term41.default.loads
tftp-server flash:term61.default.loads
tftp-server flash:SCCP6945.9-2-1-0.loads
tftp-server flash:P0030801SR02.loads
tftp-server flash:SCCP11.8-5-3S.loads
tftp-server flash:term06.default.loads
tftp-server flash:term11.default.loads
tftp-server flash:term42.default.loads
tftp-server flash:term62.default.loads
tftp-server flash:SCCP42.8-5-3S.loads
tftp-server flash:term31.default.loads
tftp-server flash:term45.default.loads
tftp-server flash:term65.default.loads
tftp-server flash:term70.default.loads
tftp-server flash:term71.default.loads
tftp-server flash:term75.default.loads
tftp-server flash:SCCP31.8-5-3S.loads
tftp-server flash:SCCP41.8-5-3S.loads
tftp-server flash:SCCP45.8-5-3S.loads
tftp-server flash:SCCP70.8-5-3S.loads
tftp-server flash:SCCP75.8-5-3S.loads
tftp-server flash:SCCP69xx.8-5-3-0.loads

 

telephony-service
max-ephones 5
max-dn 50
ip source-address 192.168.1.17 port 2000
dn-webedit
time-webedit
web admin system name james secret 0 smithsd0ck
web admin system name alex secret 0 smithsd0ck
load 7960-7940 P0030801SR02
load 6921 SSCCP69xx.8-5-3-0
load 6941 SCCP69xx.8-5-3-0
transfer-system full-consult
create cnf-files
exit

ip http path flash:/GUI
ip http server
ip http secure-server
ip http authentication local

 

telephony-service

ephone-dn  1
 number 1001
 name ***Black 6941 ***
ephone-dn  2
 number 1002
 name ***6921 v1***
ephone-dn  3
 number 1003
 name ***6921 v2***
ephone-dn  4
 number 1004
 name ***Big Bertha***


ephone  1
 mac-address E8B7.484E.8483
 type 6941
 button  1:1
ephone  2
 mac-address 8478.ACC7.13C0
 type 6941
 button  1:2
ephone  3
 mac-address 8478.ACC7.13A4
 type 6921
 button  1:3
ephone  4
 mac-address 0023.5E18.A3AA
 type 7940
 button  1:4
exit


interface BRI0
 shutdown
interface BRI1
 shutdown
interface BRI2
 shutdown
 description Test_ISDN_1
 no ip address
 isdn switch-type basic-net3
 isdn overlap-receiving
 isdn point-to-point-setup
 isdn incoming-voice voice
 isdn static-tei 0
 no shutdown
exit

voice-port 2
 compand-type a-law
 cptone GB
 description Test_ISDN_1
exi

dial-peer voice 1 pots
destination-pattern 9T
port 2


ephone-hunt 1 longest-idle
 pilot <<<REMOVED>>>>
 list 1001, 1002, 1003
exit

voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip

0 Helpful

Chris Deren
Hall of Fame
Hall of Fame
In response to RedReddington

‎01-22-2015 06:46 AM

OK, this is not the config, but rather a script you used to configure it, lets assume that all commands took, then it should be OK.

Can you provide "debug isdn q931" and "debug voice dialpeer" for the outbound call?

0 Helpful

RedReddington
Level 1
Level 1
In response to Chris Deren

‎01-22-2015 06:49 AM

Oh yeah that's just how its configured. You know what we actually got this working.

If it helps ANYONE else at all I will be a very happy man.

http://mickvaites.com/2009/06/cisco-isdn2e-vic2-2bri-ntte-configuration-issues/

Then after that it just needed

the bearer cap speech tag on the voice port.

https://learningnetwork.cisco.com/thread/60239

 

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