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Cisco Bug: CSCup09848 - CUBE Traceback seen during call connect possibility of RTP port leak

Last Modified

Nov 25, 2019

Products (1)

  • Cisco 2900 Series Integrated Services Routers

Known Affected Releases


Description (partial)

When call comes into CUBE and CUBE send the call with SRTP  a traceback may be generated and RTP port may not be cleared correctly. 

This leads to RTP port leak and can cause eventual exhaustion which leads to call failure. 

In SIP SDP, the CUBE will set the RTP port to be zero

m=audio 0 rtp/avp 0 18 101

During call established with SRTP offer on a CUBE ASR or ISR router.
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