FXO Ports Problem

[atrin.saghebfar]

Hello everybody

i have 12 fxo ports which connect to PSTN with my 2801 router and PVDM2-16

and i have CUCM7.1 which is my Call Processing server

my problem is somtimes oitgoing calls through FXOs have problem, for example they have echo, delay and a major problem is both side of the phone line could not speak at same time and call getting beaked until one side stop talking.

does anybody have any of this problem

here is my FXO ports config

voice-port 0/0/0

trunk-group FXOPORTS

supervisory disconnect dualtone pre-connect

supervisory answer dualtone

input gain 14

timeouts call-disconnect 0

timeouts wait-release 1

connection plar opx 899

caller-id enable

and i 'm also test with this config too:

voice-port 0/0/1

trunk-group FXOPORTS

connection plar 700

caller-id enable

[Jonathan Schulenberg]

Try removing the 'input gain 14', resetting the voice port (shutdown, no shutdown) and see if the issue improves.

More detail:

http://www.cisco.com/en/US/tech/tk652/tk698/technologies_tech_note09186a0080149a1f.shtml

Please remember to rate helpful responses and identify helpful or correct answers.

[atrin.saghebfar]

Dear Jonathan

thank for your replay

actually i'm already test this, but its not help

today i'm thinking about the change the signaling from Loopstart to Ground Start, whats your opinion?? is it useful or no?

[paolo bevilacqua]

No, with groundstart it would not work at all.

You should configure cptone under voice-port.

[atrin.saghebfar]

Dear Paolo

how can i capture my CPTON to correct one, i know i can use cptone command under line and use predefined options

[Roger Kallberg]

There are a number of predefined countrys for CPTONE. In what country do you have the system deployed?

Sent from Cisco Technical Support iPhone App

[Bruno Rangel]

Hi

You should configure the  Call Progress Tones to match your Central office or ISP, try under Voice-port configuration mode you can do the follows:

MYLABVGW(config-voiceport)#cptone ?
  locale   2 letter ISO-3166 country code
AR Argentina            IN India                     PE Peru
AU Australia             ID Indonesia              PH Philippines
AT Austria                IE Ireland                  PL Poland
BE Belgium              IL Israel                    PT Portugal
BR Brazil                  IT Italy                     RU Russian Federation
CA Canada               JP Japan                  SA Saudi Arabia
CN China                 JO Jordan                 SG Singapore
CO Colombia            KE Kenya                 SK Slovakia
C1 Custom1             KR Korea Republic    SI Slovenia
C2 Custom2             KW Kuwait               ZA South Africa
CY Cyprus               LB Lebanon              ES Spain
CZ Czech Republic   LU Luxembourg        SE Sweden
DK Denmark            MY Malaysia            CH Switzerland
EG Egypt                MX Mexico               TW Taiwan
FI Finland                NP Nepal                 TH Thailand
FR France               NL Netherlands         TR Turkey
DE Germany            NZ New Zealand       AE United Arab Emirates
GH Ghana               NG Nigeria               GB United Kingdom
GR Greece              NO Norway               US United States
HK Hong Kong        OM Oman                 VE Venezuela
HU Hungary              PK Pakistan             ZW Zimbabwe
IS Iceland               PA Panama

From the list you can choose the 2 letter that corresponds your Country or Region