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Replies

Unable to Dial International Calls from the USA

smh1218
Level 1
Level 1

I am having difficulties getting International Calls to go through. Does anyone have any clue to what would be preventing me from making those calls?

RtR Config:

controller T1 0/0/0

framing esf

linecode b8zs

channel-group 0 timeslots 1-24

!

controller T1 0/2/0

framing esf

linecode b8zs

pri-group timeslots 1-24

vlan internal allocation policy ascending

!

isdn switch-type primary-ni

!

voice-port 0/2/0:23

bearer-cap Speech

!

!

!

!

dial-peer cor custom

name internal

name local

name domestic

name international

name 900

name 976

!

dial-peer cor list call-international

member international

!

dial-peer cor list user-international

member internal

member local

member domestic

member international

!

dial-peer voice 6 pots

description Outgoing Calls

destination-pattern 9T

port 0/2/0:23

!

dial-peer voice 5 pots

description International

destination-pattern 9011T

port 0/2/0:23

forward-digits 15

!

2 Accepted Solutions

Accepted Solutions

paolo bevilacqua
Hall of Fame
Hall of Fame

Hi, for your DP 5, the proper config config is wihtout any forward-digits command, and prefix 011 instead.

Another little know technique is:

destination-pattern 9[0][0][1].......T

this way, no prefix command is needed.

Hope this elps, please rate post if it does!

View solution in original post

telcos and they're requests hehe

weird thing, i've configured that but if i strip the 011 i at least set the call as international but if that's what the telco expects let's give them that

drop the prefix command from the dial-peer and if you're using CUCM change the type under the GW or endpoint config to send them unknown and try again

HTH

javalenc

if this helps, please rate

HTH

java

if this helps, please rate

View solution in original post

20 Replies 20

paolo bevilacqua
Hall of Fame
Hall of Fame

Hi, for your DP 5, the proper config config is wihtout any forward-digits command, and prefix 011 instead.

Another little know technique is:

destination-pattern 9[0][0][1].......T

this way, no prefix command is needed.

Hope this elps, please rate post if it does!

p.bevilacqua -

Thank you so much for the fast response. If I am reading your reply correctly my DP 5 should look like this?

dial-peer voice 5 pots

description International

destination-pattern 9011T

port 0/2/0:23

prefix 011

Yes. Only, it is always better to place at least 6-8 dots before the T to enforce a reasonable minimum lenght in the number.

Hey Paolo, i've never thought of using a couple of dots in the international calla dial-peer but guess you're right.

Some extra dots before the T won't hurt =), at least a couple of them for the country code

also as a little extra to your info, Steven when configuring a dial-peer or a route pattern for international calls there is really no way to know how many digits a user is going to dial and since the dial plans in the world are very different configuring a hard number of digits would mean that only countries to which that max N numbers make the whole phone number would be reachable.

in your initial scenario a call to a country in which i need 16 digits to call would fail.

HTH

javalenc

if this helps, please rate

HTH

java

if this helps, please rate

Yes, in fact an even better DP for international would be:

destination-pattern 9011[2-9].....T

I personally like to enforce dialplans in the gateway to minimize misdialed calls.

gogasca
Level 10
Level 10

After hcanging the dial-peer check if you are in fact sending a q.931 setup message or not by debugging debug isdn q931

You may try to tweak the numplan or num type for isdn called party

The international call is still failing, here is the debug of the ISDN call as requested. I get a fast busy when I call international...

Apr 7 21:59:48.001: ISDN Se0/2/0:23 Q931: Applying typeplan for sw-type 0xD is 0x2 0x1, Calling num 9185911093

Apr 7 21:59:48.001: ISDN Se0/2/0:23 Q931: Applying typeplan for sw-type 0xD is 0x1 0x1, Called num 011972777870200

Apr 7 21:59:48.005: ISDN Se0/2/0:23 Q931: TX -> SETUP pd = 8 callref = 0x04D6

Bearer Capability i = 0x8090A2

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98396

Exclusive, Channel 22

Progress Ind i = 0x8183 - Origination address is non-ISDN

Display i = 'Scott Gund'

Calling Party Number i = 0x2180, '9185911093'

Plan:ISDN, Type:National

Called Party Number i = 0x91, '011972777870200'

Plan:ISDN, Type:International

Apr 7 21:59:48.057: ISDN Se0/2/0:23 Q931: RX <- CALL_PROC pd = 8 callref = 0x84D6

Channel ID i = 0xA98396

Exclusive, Channel 22

Apr 7 21:59:48.057: ISDN Se0/2/0:23 Q931: RX <- PROGRESS pd = 8 callref = 0x84D6

Cause i = 0x829F - Normal, unspecified

Progress Ind i = 0x8488 - In-band info or appropriate now available

Apr 7 21:59:50.705: ISDN Se0/2/0:23 Q931: TX -> DISCONNECT pd = 8 callref = 0x04D6

Cause i = 0x8090 - Normal call clearing

Apr 7 21:59:50.721: ISDN Se0/2/0:23 Q931: RX <- RELEASE pd = 8 callref = 0x84D6

Apr 7 21:59:50.725: ISDN Se0/2/0:23 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x04D6do

Apr 7 21:59:57.653: %ISDN-6-DISCONNECT: Interface Serial0/2/0:22 disconnected from 6250662 , call lasted 173 seconds

Apr 7 21:59:57.657: ISDN Se0/2/0:23 Q931: TX -> DISCONNECT pd = 8 callref = 0x04D5

Cause i = 0x8090 - Normal call clearing

Apr 7 21:59:57.681: ISDN Se0/2/0:23 Q931: RX <- RELEASE pd = 8 callref = 0x84D5

Apr 7 21:59:57.685: ISDN Se0/2/0:23 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x04D5term no mon

Where is that you configured type international ? in the CM, or do you have a translation profile or isdn map address perhaps, please remove that, is not supposed to be there.

It is configured in the CM. Do I need to set it to "unknown"?

do you know what is your telco expecting for international calls??

what digits are they expecting?

what numbering plan?

this way you can match those requirements

javalenc

HTH

java

if this helps, please rate

I really appreciate all the help .... I just spoke to the Telco and they are telling me they needing me to set the switch type to UNKNOWN, and that I need to strip off the 011 before sending them the digits.

That doesnt make sense to me, how will the telco's dms switch no what to do with the call if I strip the 011 off?

Yes please.

telcos and they're requests hehe

weird thing, i've configured that but if i strip the 011 i at least set the call as international but if that's what the telco expects let's give them that

drop the prefix command from the dial-peer and if you're using CUCM change the type under the GW or endpoint config to send them unknown and try again

HTH

javalenc

if this helps, please rate

HTH

java

if this helps, please rate

The logic of not needing prefix when type is international makes perfects sense.

Then you have at least 10 different places in CM and router where you could play with numbers and plan/type, all of which again do make sense if you know what are you doing.

But at the end of the day I understand that with all these things perfectly under control for the experienced, someone at the first installation (and 2nd, 3rd possibly) will get lost in no time.

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