I have a 2821 router with a VIC2-4FXO for incoming/outgoing calls to the mobile telephone network (numbers the kind of 6........) calling through Nokia Premicell lines, and a PRI for landline calls (915983270 is the main PRI number).
Incoming calls are immediately answered by the router, and the caller hears a white background noise mixed with a new ring tone until ephone with configured dn 22 answers.
When the user with dn 22 answers, his voice is mixed with the noise and somewhat muffled.
Not sure there is a default. heck "show voice port" with and without the command to see.
Anyway, regarding the FXO port, I think you mean user gets a dialtone ? How is the call going to ephone 22? There is no connection-plar so they must dial digits, it is normal that they hear ringback while the phone is ringing.
The impedence setting on FXO may be wrong. Why don't you try an impedance sweep as recommended:
Confirmed, compand-type a-law does not produce any changes in the running configuration.
Regarding the FXO port, the calling party does not receive a dial tone but a ring tone. The call is going to ephone-dn 22 because it is the best dial-peer match. There are several extensions with a button overlayed with dn 22 so that the call rings in every telephone:
I have been pushed to this configuration because the call coming through the FXO port does not carry any numbering information, and besides, there is not an operator but a pool of people to handle the calls.
Sure, but no compand type can be set for analog ports. The system will automatically set the DSP attached to analog port, based on codec negotiated with the remote party.
Same with an all pots configuration (no actual voip), the system will again choose the appropriate compand type, a-law in this case.
I was recommending a THL sweep because the choice of complex2 impedance on FXO ports seem arbitrary, and should be tested with the real conditions expecially considering that a GSM adapter is being used.
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