10-01-2008 06:20 AM - edited 03-15-2019 01:39 PM
I have a network with a central CCM and a TDM PABX which is being replaced with SRST
CCM >>>>>>>>>>>>> h323 gw>>>>>Network cloud>>>>>>>>>>.h323>>>>>>>>qsig>>>>pabx
Question
We need to keep the H323 GW in place as they act as a demarcation point for our Voice Cloud
Inbound, Outbound
All calls to/from the remote site will be configured to use the H323 GW even though they can "route" to each other directly- business reasons
Site 1 to have a SRST router and a H323 GW
When the network is working the inbound calls are sent to the H323 which has a VOIP Dial-Peer to the CCM cluster however when the connection is lost to the CCM cluster I want the calls to be sent to the SRST router as an alternative as the phones at Site 1 will being now registered to the SRST router
What is the best way to manage this- I think I need two dial-peers 1 x to go to CCM and the other to kick in when loss of connectivity to CCM and use this to point the calls directly to the SRST router almost as like MGCP with failover to H323. Can I configure the GW as MGCP from CCM to GW and use H323 Dial-Peer from the GW to the Voice Cloud and then have additional H323 as the alternative application for inbound calls pointing to the SRST router again as in SRST mode
or can I do the above but all in H323 dial-peers? I presume I could use preferences on the dial-peers for preference 1 to CCM, Preference 2 to SRST for inbound calls but this may involve automatically routing calls to the SRST routing maybe in some circumstances???
thanks
10-01-2008 07:14 AM
the best way is as u stated through making two dial-peers each one with diffrent prefrence
there is a way to increase the failover time between dia-peer with the same distination pattren and diifrent prefrence
voice class h323 1
h225 timeout tcp establish 15
the defual timeout is 15 second u may need to increase it or decrease it as u want
this will control the time that dialpeer with lower prefrence to failover to the one with higher prefrence number
u need it on the dial-peer with lower prefrence number
apply it like:
dial-peer voice 9 voip
voice-class h323 1
good luck
if helpful Rate
10-01-2008 07:24 AM
Thanks, the concern I have with perference is the automatic nature of the feature, If CCM fails to answer even of it can then the call is routed to SRST router or am I being over concerned?
10-09-2008 07:15 AM
Further to the answer, can I have a GW registered to CCM via MGCP and have H323 dial-peers as well? Can I configure it for CCM to send calls to the GW via MGCP and then for the GW to "extend" them via H323 dial-peers? The GW will be registered to CCM but also point to a GK using H323 - thanks
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