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Gold

Removal of specific SIP INVITE Media Attribute

Hi all

Anybody know of a way to remove a specific SDP media attribute from a SIP INVITE?

I'm currently battling with a SIP Service Provider who are asking me to remove one of the attributes we are sending from our CUBE (despite the same config working perfectly with other SIP SPs)

They want me to remove media attribute 19 (CN).

I've tried looking at SIP profiles (voice class sip-profiles) and looking for a specific way of just removing one attribute from the header but can't seem to find one... Anybody got any ideas?

Bring back the days of ISDN PRI. Much simpler

Current CUBE Config:

voice service voip

allow-connections h323 to h323

allow-connections h323 to sip

allow-connections sip to h323

allow-connections sip to sip

  sip

    bind control source-interface GigabitEthernet0/0.761

    bind media source-interface GigabitEthernet0/0.761

    early-offer forced

!

dial-peer voice 666 voip

destination-pattern 123456789

voice-class sip privacy header

voice-class sip early-offer forced

session protocol sipv2

session target ipv4:192.168.1.28

dtmf-relay rtp-nte

codec g711alaw


 

Barry Hesk

Intrinsic Network Solutions

1 ACCEPTED SOLUTION

Accepted Solutions

Re: Removal of specific SIP INVITE Media Attribute

Try to add "no vad" on the outgoing dial-peer

(19 is comfort noise payload type, and here you are just disabling VAD)

HTH

3 REPLIES

Re: Removal of specific SIP INVITE Media Attribute

Try to add "no vad" on the outgoing dial-peer

(19 is comfort noise payload type, and here you are just disabling VAD)

HTH

Gold

Re: Removal of specific SIP INVITE Media Attribute

Hi Volodymyr

Perfect - thank you. Talk about me trying to overcomplicate things! Then again, I've just found out how to fix another problem with SIP SDP header translations so I didn't totally waste my time.

Thanks again. Barry

Barry Hesk

Intrinsic Network Solutions.

Re: Removal of specific SIP INVITE Media Attribute

Hi Barry,

Thank you for the feedback.

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