03-28-2007 02:35 AM - edited 03-14-2019 08:43 PM
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.
No problem with outgoing calls.
The relevant configuration is:
!
voice translation-rule 1
rule 1 // /915983270/
!
voice translation-profile default
translate called 1
!
voice-port 0/0/0:15
cptone ES
!
voice-port 0/2/0
translation-profile incoming default
compand-type a-law
cptone ES
impedance complex2
caller-id enable
!
dial-peer voice 1002 pots
destination-pattern 6........
incoming called-number 915983270
direct-inward-dial
port 0/2/0
prefix 6
no register e164
!
ephone-dn 22 dual-line
number 915983270
pickup-group 0
night-service bell
!
03-28-2007 04:05 AM
Hi,
voice-port 0/0/0:15
compand-type a-law
Hope this helps, if so please rate post!
03-28-2007 04:21 AM
Hi,
The default for E1 is a-law.
I am more intrigued about the second ring tone that can be heared until dn 22 catches the call.
03-28-2007 04:32 AM
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:
http://cisco.com/en/US/tech/tk652/tk701/technologies_tech_note09186a0080477a06.shtml
Hope this helps, if so please rate posts!
03-28-2007 07:00 AM
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:
!
ephone 7
mac-address 0019.55E6.47E9
type 7912
button 1o7,22,23,24,25,26,33,44,45,46
!
!
!
ephone 8
mac-address 0019.55B9.36B4
type 7912
button 1o8,22,23,24,25,26,33,44,45,46
!
!
!
ephone 9
mac-address 0019.55A9.5CC3
type 7912
button 1o9,22,23,24,25,26,33,40,44,45
!
!
!
ephone 10
mac-address 0019.55E6.5332
type 7912
button 1o10,22,23,24,25,26,33,44,45,46
!
!
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.
03-28-2007 04:29 AM
Hi,
I have heard the static you speak of and it was a u-law / a-law mismatch.
Try
voice-port 0/2/0
compand-type u-law
Please rate helpful posts.
Thanks,
Jeff
03-28-2007 06:39 AM
jogolia, this installation is in Europe / E1.
So they must use a-law, not u-law.
03-28-2007 07:01 AM
I agree for the PRI
The 4x POTS Nokia Premicell lines may be different.
A mismatch between a-law & u-law causes static.
03-28-2007 07:15 AM
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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