DTMF digit duplication.

0 pts.
Tags:
Network protocols
I am receiving calls from a DID provider over the public Internet. The platform that the callers access is a calling card one so once the call is established the caller is asked for a PIN. Since the last month I noticed that we are receiving a large number of duplicated digits that makes the call fail. The provider confirms that no change was made at his equipment neither we change anything in ours so my question is: What can be causing this behavior? Could it be a router in the path between the provider and us? Any sugestion will be appreciated. Regards
ASKED: January 4, 2007  1:34 PM
UPDATED: January 5, 2007  9:41 AM

Answer Wiki

Thanks. We'll let you know when a new response is added.

Hi,

Can you provide more details like,
what type of connectivity it is?
PRI or IP trunk?
Trunk type (4ESS or 5eSS or h.323)
trunk connected between the Central office to PBX?

Discuss This Question: 1  Reply

 
There was an error processing your information. Please try again later.
Thanks. We'll let you know when a new response is added.
Send me notifications when members answer or reply to this question.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
  • Juanfe
    To clarify: The circuit is: DID==>public internet==>SIP server==>Cisco AS5350==>PRI==> Calling Card platform. I am seeing the duplication at the Cisco output. Over the T1 PRI. Unfortunatelly I don't have the means to sniff the rtp packets arriving to the Cisco once the communication is established as the SIP server is not relaying rtp. So at this point the voice communicaton is direct between the Cisco and the DID provider. Thanks and regards Juanfe
    0 pointsBadges:
    report

Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to:

To follow this tag...

There was an error processing your information. Please try again later.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Thanks! We'll email you when relevant content is added and updated.

Following