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New Member

CUBE rtp path


I have one audio issue with our SIP trunk through the CUBE. The problem is that we have two interface in our CUBE one for signaling and one for RTP, and during the call setup our CUBE is sending the signaling interface IP address as media address where SP should send us the RTP, and this both signaling and RTP interface they are not routed from SP. How can I let the cube to send the IP address of the RTP interface so that the SP can send their RTP truffic to that interface.

The configuration is as following:

voice service voip

no ip address trusted authenticate


mode border-element

allow-connections h323 to h323

allow-connections h323 to sip

allow-connections sip to h323

allow-connections sip to sip

fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none


  bind control source-interface GigabitEthernet0/1.1

  bind media source-interface GigabitEthernet0/1.1

  min-se 90 session-expires 90

  early-offer forced


interface GigabitEthernet0/1

no ip address

duplex auto

speed auto


interface GigabitEthernet0/1.1

description CUBE Signeling

encapsulation dot1Q 500

ip address


interface GigabitEthernet0/1.2

description CUBE Bearer

encapsulation dot1Q 501

ip address


dial-peer voice 400 voip

description $$ - Incoming SIP - $$

translation-profile incoming CUBE-IN

session protocol sipv2

session target ipv4:

session transport udp

incoming called-number 964T

voice-class sip bind control source-interface GigabitEthernet0/1.1

voice-class sip bind media source-interface GigabitEthernet0/1.1

dtmf-relay rtp-nte h245-alphanumeric

codec g711ulaw

no vad


I have tried to bind the media source-interface with G0/1.2 but this didn't help, also from the debug ccsip media we can see the CUBE is sending the signaling IP address as source of RTP packets:

Jul 12 12:16:23.859: //459/FA5EBC800000/SIP/Media/sipSPIDisplayStreamInfo:

      Stream type            : voice+dtmf

      Media line             : 1

      State                  : STREAM_ADDING (2)

      Stream address type    : 1

      Callid                 : 459

      Peer Callid            : -1

      RTP/SRTP Negotiated     : 8

      Negotiated Codec       : g711ulaw, bytes :160

      Nego. Codec payload    : 0 (tx), 0 (rx)

      Negotiated DTMF relay  : rtp-nte

      Negotiated NTE payload : 101 (tx), 101 (rx)

      Negotiated CN payload  : 0

      Media Srce Addr/Port   : []:22134   --------------------------> I want to change this to in order to receive rtp packets.

      Media Dest Addr/Port   : []:32380

Many thanks,


Everyone's tags (3)
New Member

CUBE rtp path

I have fixed the issue, after bind media source-interface g0/1.2 you should reload the router to take effect.