What is SIP Application Layer Gateway on the 2700HGV Router?

Jimbo · Jul 31, 2008, 19:54:52

I've done a quick Google but it seems quite technical. Could some nice bod explain it to me please? It was disabled but from what I can gather it should be enabled???

It seems to relate to NAT and Firewall stuff so it sounds important.

I have enabled this on the Router, is this ok for increased security?

Thanks.

Simon · Jul 31, 2008, 21:28:09

I'm sure someone will clarify this soon, Jimbo, but it won't be me!

Rik · Aug 01, 2008, 09:35:06

Does this help, Jimbo?

somanyholes · Aug 01, 2008, 09:42:30

http://en.wikipedia.org/wiki/Session_Initiation_Protocol

Rik · Aug 01, 2008, 09:43:40

Got a translation into English, So?

somanyholes · Aug 01, 2008, 10:16:20

Sip is used for multimedia comm's. For things such as voice and video. It was designed by the ietf who basically design the internet. The alternative to sip is h323 which was designed by the telecomm's carriers.

What does it do.

It controls video/audio sessions by Establishing connections, it can also modify sessions by changing the ports being used. It can also tear down sessions (finish). Its main purpose it to deliver invitations to possible session participants. Think iplayer/realplayer/voip

why do we need it

Bit of a bugger to explain...
It helps finding possible users as they move around from place to place.

This explains it in fairly english terms......
http://www.vnunet.com/networkitweek/features/2059672/rtfm-does-sip-work

somanyholes · Aug 01, 2008, 10:17:37

to answer the original question lol.

If you have no issues with video or voice, i wouldn't worry about it. If you do, turn it on

Rik · Aug 01, 2008, 10:19:49

Thanks, So.

Jimbo · Aug 02, 2008, 15:40:40

Thanks ever so much.

I'm going to re-read through everyone's posts and see if I can take it all in.

Seems like it can't do any harm? Or can it?!

Jimbo · Aug 02, 2008, 15:43:53

Actually I've just disabled it again, I think it's probably there for the VoIP functionality on the SingTel firmware.

Appreciate all the help!

g7pkf · Aug 08, 2008, 15:22:19

Sorry i should have jumped in earlier.

switch it off unless you have an ata (analogue terminal adapter) or proper voip phone on your network (not skype thats another kettle of cr*p----sorry fish)

Dean