Incoming PSTN UK BT (POTS) dial problem

Answered Question
Nov 21st, 2009
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Hi


I have 2 IP phones 7940's connected to a C1760 router configured with 2xFXS ports and 2x FXO ports running CME v4.1

The 2 phones can each complete a successful outgoing call over the pstn line. When an INCOMING call is being received the caller hears one ring and nothing else?

Correct Answer by William Bell about 7 years 4 months ago

Looks like you are missing dial-peers on the POTS lines to accept inbound calls.  Example:


dial-peer voice pots 100

direct-inward-dial

incoming called-number .T

port 1/0

!

dial-peer voice pots 100

direct-inward-dial

incoming  called-number .T

port 1/1

!


This assumes you don't require translations to get to extension 1000 and 1001.


HTH.


Regards,
Bill

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Correct Answer
William Bell Sat, 02/20/2010 - 17:25
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  • Purple, 4500 points or more

Looks like you are missing dial-peers on the POTS lines to accept inbound calls.  Example:


dial-peer voice pots 100

direct-inward-dial

incoming called-number .T

port 1/0

!

dial-peer voice pots 100

direct-inward-dial

incoming  called-number .T

port 1/1

!


This assumes you don't require translations to get to extension 1000 and 1001.


HTH.


Regards,
Bill

stev1efaill Sun, 02/21/2010 - 07:22
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Hi


I was being a bit dim and not reading the CCNA Voice guide


Page 271 of the Cisco Press guide:-


When an incoming signal is detected CME doesn't know what to do with it unless you specify a PLAR (Private Line Automatic Ringdown)


config:-


voice-port 1/0

cp-tone GB

connection plar 1000



voice-port 1/1

cp-tone GB

connection plar 1000


With this config any of the 2 ports connected with a standard PSTN phone line will be forwarded instantly to x1000 i.e a receptionist if you can afford one!

Another important note is the cp-tone to the correct country otherwise the incoming caller knows they have dropped on a call system.


All I have to work out now is a timeout, if the incoming call is closed x1000 keeps ringing for approx 2 minutes


thanks


Steven

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