[Asterisk-Users] High capacity voicemail

[Alistair Cunningham]

Marcin,

This depends enormously on the type of users.

For 5000 users, I would normally recommend IBM's Unified Messaging 
product. For business users on that, I normally recommend at least one 
E1 per 2000 users as a starting point. For residential users, at least 
one E1 per 5000 users. IBM-UM is voicemail with web and email interfaces 
(which reduces traffic) and a lot of follow-me and operator services 
(which increases traffic if you can't do release link transfers, and 
reduces it if you can). Asterisk would be similar.

If you can do release link transfers, then you can get more users per 
trunk; in some scenarios up to double the number. The above figures 
assume you can.

The above figures are just a starting point; there is a good chance that 
your users are not typical. For example, in some countries in Asia, you 
can support many more business users - if callers hear a voicemail 
greeting, they usually hang up immediately, and call the person's mobile 
phone. You really need to do a pilot with a subset of users to gauge how 
much they use the system, and what features they use.

For 5000 users, I would also consider some form of redundancy and 
automatic failover. 5000 angry users is not a pleasant sight!

My company, Integrics Ltd, does consulting and installations of both 
Asterisk and IBM-UM. If you'd like help planning and installing such 
systems, drop me an email or give me a call.

Alistair Cunningham,
Integrics Ltd,
Telephony, Database, Unix consulting worldwide
+44 (0)7870 699 479
http://integrics.com/


izo wrote:
> Hi,
> Does anybody has experience with high capacity PSTN voicemail and
> asterisk, running more then 5k mailboxes for PSTN users ?
> How many mailboxes can I serve with 4xE1 card if we assume that we
> have enough harddrive
> capacity. What would be server requirements. Would the CPU load be the
> same when storing
> voicemails in gsm format as compresing to gsm for ip calls ? 
> Any hints would be greatly appreciated
> 
> regards
> m.
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users at lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
> 
>