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New Member

SRP547W, strange ring problem on FXS port

Hello,

Our customer is using SRP547W, 4FXS/1FXO device and he has reported that he is getting weird rings one of the FXS line, which is very short rings, he picks up the phone and got a silence and then decided to hung up, but those short rings don’t stop for a while. Its frequency is not precise, I mean, sometimes they are facing this stuations 4-5 times a day, sometimes once a day.

Do you ever face this issue?

Regards,

Yunus

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7 REPLIES

SRP547W, strange ring problem on FXS port

Can you enable the SRP syslog and post the report?

In this way we can find what is the cause of the ring.

Regards.

New Member

SRP547W, strange ring problem on FXS port

Dear Daniele,

Could you please more specific about SRP syslog? Do you mean, on the GUI, Administration --> Log --> Log Module, enabling kernel and system Logs?

Regards,

Yunus

Cisco Employee

SRP547W, strange ring problem on FXS port

Hi Yunus,

You should configure the settings on the voice > system page too.  Set the syslog server and specifically set the dubug level to 3.

Regards,

Andy

New Member

Re: SRP547W, strange ring problem on FXS port

Hello,

The customer reported the problem happened at around 15:00 and we got syslog at that time.

I checked the log but didnt see any weird things on it. Log is attached. (syslog.log)

Feb 16 14:54:46 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:54:46 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:54:46 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:54:46 5.130.84.12 sprvoip: [4] audio dump duration:96 s

Feb 16 14:54:46 5.130.84.12 sprvoip: [4] audio dump duration:96 s

Feb 16 14:54:46 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9743 s

Feb 16 14:54:46 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9743 s

Feb 16 14:59:22 5.130.84.12 sprvoip: [4] session start

Feb 16 14:59:22 5.130.84.12 sprvoip: [4] session start

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:22 5.130.84.12 sprvoip: [4] audio dump duration:1 s

Feb 16 14:59:22 5.130.84.12 sprvoip: [4] audio dump duration:1 s

Feb 16 14:59:22 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9839 s

Feb 16 14:59:22 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9839 s

Feb 16 14:59:26 5.130.84.12 sprvoip: [4] session start

Feb 16 14:59:26 5.130.84.12 sprvoip: [4] session start

Feb 16 14:59:26 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 14:59:26 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 14:59:31 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:31 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:31 5.130.84.12 sprvoip: FXO[4]:On Hook

Feb 16 14:59:31 5.130.84.12 sprvoip: FXO[4]:On Hook

Feb 16 14:59:31 5.130.84.12 sprvoip: [4] audio dump duration:5 s

Feb 16 14:59:31 5.130.84.12 sprvoip: [4] audio dump duration:5 s

Feb 16 14:59:31 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9840 s

Feb 16 14:59:31 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9840 s

Feb 16 15:00:58 5.130.84.12 sprvoip: [1]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:00:58 5.130.84.12 sprvoip: [1]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:02:26 5.130.84.12 sprvoip: [1]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:02:26 5.130.84.12 sprvoip: [1]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:02:36 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:02:36 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:03:42 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:03:42 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:03:50 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:03:50 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:03:56 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:03:56 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:04:03 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:04:03 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:54:46 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:54:46 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:54:46 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:54:46 5.130.84.12 sprvoip: [4] audio dump duration:96 s

Feb 16 14:54:46 5.130.84.12 sprvoip: [4] audio dump duration:96 s

Feb 16 14:54:46 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9743 s

Feb 16 14:54:46 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9743 s

Feb 16 14:59:22 5.130.84.12 sprvoip: [4] session start

Feb 16 14:59:22 5.130.84.12 sprvoip: [4] session start

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:22 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:22 5.130.84.12 sprvoip: [4] audio dump duration:1 s

Feb 16 14:59:22 5.130.84.12 sprvoip: [4] audio dump duration:1 s

Feb 16 14:59:22 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9839 s

Feb 16 14:59:22 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9839 s

Feb 16 14:59:26 5.130.84.12 sprvoip: [4] session start

Feb 16 14:59:26 5.130.84.12 sprvoip: [4] session start

Feb 16 14:59:26 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 14:59:26 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 14:59:31 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:31 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 14:59:31 5.130.84.12 sprvoip: FXO[4]:On Hook

Feb 16 14:59:31 5.130.84.12 sprvoip: FXO[4]:On Hook

Feb 16 14:59:31 5.130.84.12 sprvoip: [4] audio dump duration:5 s

Feb 16 14:59:31 5.130.84.12 sprvoip: [4] audio dump duration:5 s

Feb 16 14:59:31 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9840 s

Feb 16 14:59:31 5.130.84.12 sprvoip: path:nb_in, did:40, start at 9840 s

Feb 16 15:00:58 5.130.84.12 sprvoip: [1]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:00:58 5.130.84.12 sprvoip: [1]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:02:26 5.130.84.12 sprvoip: [1]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:02:26 5.130.84.12 sprvoip: [1]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:02:36 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:02:36 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:03:42 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:03:42 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:03:50 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:03:50 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:03:56 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:03:56 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=1

Feb 16 15:04:03 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Feb 16 15:04:03 5.130.84.12 sprvoip: [0]AUD_setDigitCollectMode: ddm mode=0

Re: SRP547W, strange ring problem on FXS port

Probably the "strange ring" is caused by this:

Feb 16 14:59:31 5.130.84.12 sprvoip: FXO[4]:On Hook

Feb 16 14:59:31 5.130.84.12 sprvoip: FXO[4]:On Hook

I think in a FXO event.

Is there a line connected to FXO port?

Check the telephone cable. It must be only 1 pair (ring and tip wires). Cable with 2 pairs (4 wires) can be cause of problem.

Regards.

New Member

Re: SRP547W, strange ring problem on FXS port

Hello Daniele,

We tried both the 1 pair and 2 pairs cable but it doesnt change unfortunatelly. Do you have any more suggestion about this?

Regards,

Yunus

Re: SRP547W, strange ring problem on FXS port

I've found these informations:

A relay switch is incorporated in to the SRP520, such that it directly connects the FXO port and the first FXS port when:

  • There is no power supplied to the SRP
  • The device is powered, but the is no active SIP registration

Therefore, when the device is actively registered to a SIP telephony service, the FXO port is disconnected and otherwise unused.  Because the FXO port is only ever used to directly connect a phone line and a handset/fax connected to the first FXS port, there is no configuration required for it.

What is the ringing FXS port? Is it the first ports?

If no the problem is different.

If yes the problem is in the FXO.

Can you add the complete log with SIP signalling?

voice > system page

set the syslog server and specifically set the dubug level to 3

voice > line x > SIP Debug Option = Full

This issue can be caused by SIP scanning.

Do you have enable the option Restrict Source IP under Line menu?

Regards.

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