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Re: How to Configure CCM for routing calls via PSTN in MGCP Fallback [by techguy]

Sat, 07 Feb 2009 23:50:13 -0700

Callmanager discussion:: How to Configure CCM for routing calls via PSTN in MGCP Fallback
In case of WAN failure, an SRST referencing to the remote site Router should be configured so the phones know where to go in case they cannot reach the CUCM.

MGCP fallback needs to be configured also so it falls back to H323. At that point your Router will act as an H323 gateway to process and route your calls.

You'd need to have a complete set of dial-peers outgoing and incoming. You'd need to have Translations rule and translations profile in place so you can do digit manipulation, (Hint: your 4 digit extension numbers mean nothing to the PSTN world, they need the NPA-NXX aka fully qualified e.164 number to route the call).

You'd also need to have Class of Restriction (COR) in place appropriately so that all of a sudden your restricted phone is not able to dial International numbers and such.

By the way AAR feature is not designed to help out in the WAN failure scenario, rather help to route the call via PSTN when there is not enough bandwidth available (restricted by yourself between the two sites), you just enable it between the Headquarter and Branch sites for high availability.

I hope this clarifies you how things work, the rest is all the dirty work of tons of commands you'd need to put in to achieve this.

cheers.

Techguy.
Yes, It's all in the Voice! :)

Re: Getting CCM proving to be major effort [by Faisal Khan]

Tue, 25 Nov 2008 19:27:49 -0700

Callmanager discussion:: Getting CCM proving to be major effort
hi

Installing CCM 6 or 7 in vmware is quite easy compare to CCM version 4.1.3. If you can manage to get hold of a CD of CCM 6 then simply install it as if you were installing MS office 2007.

Just watch out few things

- Memory 1024MB min
- Hard drive size needs to be set to min 74GB
- During the installation do not select the following
NTP, DNS, SMTP. Installation will fail if these protocols are not net properly. My suggestion install it and then add these services as needed basis.

Good luck

Faisal Khan
VoiceBootcamp.com
CCVP Plus Bootcamp & CCIE VOICe

14167467037

Re: Calling search space and partitions [by Denis]

Mon, 29 Jan 2007 08:46:38 -0700

Callmanager discussion:: Calling search space and partitions
Do you need it for better understanding of these concepts ?