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Cisco Bug: CSCur74257 - RFC4733 packets have shorter duration than the detected duration.

Last Modified

Aug 09, 2015

Products (1)

  • Cisco VG Series Gateways

Known Affected Releases

28.3(1)DSP

Description (partial)

Symptom:
Analogue phone is sending 86ms (o.k. to ETSI standard of 65ms) DTMF tone.
Generated RFC4733 packets are only 50ms.
receiving side is ignoring these packets, since 50ms too short against RFC.

Conditions:
Cisco VG224 with 151-4.M7 and a analogue phone sending DTMF with 86ms.
If DTFM incoming duration is 100ms or longer, issue does not appear.
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