Question : Can I sell a Cisco VOIP system?

Hello,
I'll try to keep this as brief as possible.  I have a customer with three stores all connected via T1.  They decided to replace their Telrad system with a VOIP system from Shoretel, and as their IT guy I managed to sell them a new equipment to support VOIP.  Their 1600 series router was replaced by a 2800 at HQ, with 1800's at the remotes.  Catalyst 29xx series POE switches were installed to augment their existing non-POE 29xx series switches and to provide power to the phones.

I got this all installed but recommended that we proceed slowly and carefully with the VOIP rollout, and we all agreed to convert the smallest remote first.  This was a very good call, as two months of nightmares ensued.  Phones would die, calls were dropped, the system would decide it was closing time and go into night mode at 11 am.  After 60 days, Shoretel was kicked to the curb.

And who knew that Shoretel (or VOIP phones in general) didn't have simple line buttons?  This made the customer the angriest, as they were promised line appearance during the sales presentation but told afterwards that they couldn't have it and keep all the whiz-bang features.  

So, now they are looking at going back to a standard analog system with some hybrid features to send calls over IP, but they spent thousands on good Cisco stuff and it would be a shame to let it go to waste.

The question is, with my moderate Cisco experience and all these expensive shiny new units in place, would I be stupid to not propose selling them a Cisco VOIP system that they could buy from me?  What would I have to sell them to do it?  Seems like just a few voice cards and phones, or am I getting in over my head?

The new HQ router is a C2800NM-SPSERVICESK9-M with 12.4(12c).  The remotes are C1841-IPBASE-M with 12.4(1c).  The POE switches are C2960-LANBASE-M with 12.2(44)SE5.  

Their primary network application is their point of sale system, which runs over Telnet, so bandwidth use locally and between locations is very minimal.

Answer : Can I sell a Cisco VOIP system?

If you don't have experience doing this I would say that you are on the right track and that system would be great and it works well - however you would be over your head.   You would probably run into all kinds of problems  that can be resolved, because cisco support is very good - but can your customer live with the issues as you iron things out since you are not familiar with it.  The cisco route is a good route, but you might want to bring in a Cisco partner that is IP Telephony certified to do the installation.  

Also, in order to sell Communications Manager Express or Business Edition or full blown CM you need to be a cisco partner with ipt specializations.