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New Member

Force SRST??

I would like to create an access list to force a site into SRST without shutting down the WAN Interface.

I have an access list that kills MGCP and SCCP and the RTP ports. I don't think that there is anything else that needs to be denied, but I wanted to check.

Thanks a million!

2 REPLIES
Hall of Fame Super Silver

Re: Force SRST??

You're good to go. I normally just create an ACL that denies TCP ports 2000-2002.

Chris

New Member

Re: Force SRST??

If you are using an MGCP PRI dont forget TCP 2428, otherwise your phones will go into SRST mode but your gateway will not.

Here is the ACL I use to test SRST:

ip access-list extended DENY_VoIP

deny tcp any eq 2000 any

deny tcp any eq 2428 any

deny udp any eq 2427 any

permit tcp any any

permit udp any any

HTH,

-Rob

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