RE: aLaw and uLaw

From: Kurt Bergsbaken (kbergsbaken@yahoo.com)
Date: Tue Nov 18 2003 - 20:09:29 GMT-3


2/3 orf the way down.

M2CORE2#sh voice port 6/0/0

Foreign Exchange Station 6/0/0 Slot is 6, Sub-unit is
0, Port is 0
 Type of VoicePort is FXS
 Operation State is DORMANT
 Administrative State is UP
 No Interface Down Failure
 Description is not set
 Noise Regeneration is enabled
 Non Linear Processing is enabled
 Non Linear Mute is disabled
 Non Linear Threshold is -21 dB
 Music On Hold Threshold is Set to -38 dBm
 In Gain is Set to 0 dB
 Out Attenuation is Set to 3 dB
 Echo Cancellation is enabled
 Echo Cancellation NLP mute is disabled
 Echo Cancellation NLP threshold is -21 dB
 Echo Cancel Coverage is set to 8 ms
 Playout-delay Mode is set to adaptive
 Playout-delay Nominal is set to 60 ms
 Playout-delay Maximum is set to 200 ms
 Playout-delay Minimum mode is set to default, value
40 ms
 Playout-delay Fax is set to 300 ms
 Connection Mode is normal
 Connection Number is not set
 Initial Time Out is set to 10 s
 Interdigit Time Out is set to 10 s
 Call Disconnect Time Out is set to 60 s
 Ringing Time Out is set to 180 s
 Wait Release Time Out is set to 30 s
 Companding Type is u-law
 Region Tone is set for US

 Analog Info Follows:
 Currently processing none
 Maintenance Mode Set to None (not in mtc mode)
 Number of signaling protocol errors are 0
 Impedance is set to 600r Ohm
 Station name None, Station number None
 Translation profile (Incoming):
 Translation profile (Outgoing):

 Voice card specific Info Follows:
 Signal Type is loopStart
 Ring Frequency is 25 Hz
 Hook Status is On Hook
 Ring Active Status is inactive
 Ring Ground Status is inactive
 Tip Ground Status is inactive
 Digit Duration Timing is set to 100 ms
 InterDigit Duration Timing is set to 100 ms
 No disconnect acknowledge
 Ring Cadence is defined by CPTone Selection
 Ring Cadence are [20 40] * 100 msec
 Ringer Equivalence Number is set to 1
--- "Lloyd, Wayne" <WayneLl@lynxtec.com> wrote:
> Hi,
>
> You should be able to use the command "compand-type
> u-law|a-law" under the
> voice port configuration, I'm sure you can check the
> existing configuration
> by a "show voice port", I don't have the kit in
> front of me to check this as
> I'm waiting for some memory but if I remember
> rightly when checking a voice
> port you don't use the "-" between voice and port
> like you do when your'e
> configuring (might be wrong). However I think the
> reason why you can't see
> the command is because youre configuring an analog
> interface and I'm pretty
> sure that the companding type configuration is only
> required for digital
> interfaces.
>
> Thanks,
>
> -----Original Message-----
> From: Ken.Farrington@barclayscapital.com
> [mailto:Ken.Farrington@barclayscapital.com]
> Sent: 18 November 2003 21:47
> To: ccielab@groupstudy.com
> Subject: aLaw and uLaw
>
> Guys, just pulled this from the CD......for a Cisco
> 800
>
> Question is,
> How do you determine if an FXS uses alaw or ulaw on
> a 2600 router? Can you
> set it, how do you display it?
> The only thing I can find uner the voice-port 1/0/0
> command is cptone?
>
> Many thx indeed,
> Ken
>
>
>
> alaw and ulaw
> Specifies the pulse code modulation (PCM) encoding
> scheme for telephones,
> fax machines, or modems connected to a Cisco 800
> series router. The keywords
> are as follows:
>
> alaw-Specifies the ITU-T PCM encoding scheme used to
> represent analog voice
> samples as digital values.
> ulaw-Specifies the North American PCM encoding
> scheme used to represent
> analog voice samples as digital values.
> The default depends on the country chosen in the
> pots country command (on a
> cisco 800)
>
>
>
>
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