Jump to content

Grandstream 2120 - issues with SIP over TCP?


chavousc
 Share

Recommended Posts

Hi folks,

 

Anyone seen any issues with the default configuration for the grandstream phones and the GXP2120? For the life of me, I couldn't get it working yesterday. Finally changed the signaling to SIP instead of TCP and all of a sudden it started working. Had another GXP phone - GXP 2100 - on the same network and it worked without a hitch. I updated firmware and everything - would not work.

 

Anyone else seen issues with the 2120?

Link to comment
Share on other sites

This can depend on the firewall settings, if there is a firewall involved. TCP has the advantage compared to UDP that it transports messages reliably, even if the packet size gets bigger than 1492 bytes. Especially when the SIP INVITE packets get larger (e.g. a lot of codecs to offer, long names) UDP becomes unusable and this is very hard to track down. Imagine a world where email messages would be sent over UDP.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...