I've got a few Q's.
(1) I'd like to have remote access for configuring the UC540. I have an SSL VPN that is being used by a few off-site SPA525G2 phones. The UC540 is on 192.168.10.1, any PC's will be on 192.168.10.2-50, the phones are on 10.1.1.1-whatever, and that all works great.
The VPN for the phones starts at 10.2.2.1 and goes through 10.2.2.10. The SPA525G2 phones work awesomely via the VPN.
When I use the VPN client built into the UC540 (so it downloads a file named anyconnect-win-2.5.1025-web-deploy-k9.exe to me), and connect to the UC540, my Windows 7 PC gets the following:
Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 10.2.2.10
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Default Gateway . . . . . . . . . : 10.0.0.1
So the 10.2.2.10 is within the range assigned to remote phones normally, and the gateway is incorrect.
I had asked and been told if I wanted to configure the UC540 remotely (with something like CCA), that I'd need to be VPN'd into it. But I have a feeling I'm on the wrong network (same as remote phones) if I want to make changes to the UC540.
Any tips?
(2) The UC540 doesn't respond to pings on the WAN. Is there a way to make it respond to pings on the WAN w/o opening security holes (giant ones)?
(3) While I'm using the UC540 as my router now, I wonder if it is possible to use it as a phone-server only, and put a non-Cisco router in front of it. I'm quite in love w/ Tomato firmware when it comes to QoS and remote management. Does the UC540 WAN have to be on a public IP? I'm doing SIP trunking, BTW, if that matters.
(4) I have to enable traffic shaping. The unit is connected to an AT&T U-Verse modem now. When I setup QoS on Tomato and DD-WRT routers, I'm able to set both up and down speeds. I know people think a router cannot adjust the download speed, but DD-WRT and Tomato seem to make sure that non-timing-sensitive applications don't hog that bandwidth. They seem to do this by throwing away packets destined for PC's doing non-critical work, forcing those packets to be resent, but also getting the sending server to slow down in the process.
In the UC540, it looks like I can only shape by upstream, and my connection is something like 12-Mbps down, 1-Mbps up. So I have concerns about jitter and stuff. Any comments on this?
(5) When I use the maintenance/backup feature, to backup the UC540 config, the progress bar gets to about eight blocks from the end, then stops. After a minute or so of sitting there, I cancel. Is it normal for it to sit at that point? I'll have to double-check w/ a wired connection, but I'm pretty sure it has done this with both a wired and wireless (connected to cisco-data, not cisco-voice) connection. But today I was using wireless to cisco-data and it was absolutely doing it.
(5a) When I exit CCA, it asks if I want to "Save Configuration." That takes a while and sometime stops too (again, have to check wired vs. wireless). Is that normal? What is it doing at this point.
(6) Do I have to use Cisco switches with this unit? I don't really need management of ports or anything. Let me explain why. I have an Untangle UTM that feeds the PC's in the office. The Untangle UTM runs in bridge mode. I'd like to connect the UTM between the UTM540 and a little 3Com switch that feeds all the PC's in the office.
Sorry for all the newbie questions. Hopefully I'll soon be able to start helping people here instead of just asking endless questions. I'm getting things figured out, but need a little more guidance.
