I do. I cargo-culted the below config, but think the bit that is important is 
the "no service stcapp" in the dial-peer of the analogue port (I see I forgot 
the "no " prefix below). Some Googling suggests you would have "service 
MGCPAPP" in your FXS dial-peer, so maybe if you remove that then it'll bypass 
callmanager and go directly out the T1.

James Andrewartha
Network & Projects Engineer
Christ Church Grammar School
Claremont, Western Australia
Ph. (08) 9442 1757
Mob. 0424 160 877
________________________________________
From: Lelio Fulgenzi [le...@uoguelph.ca]
Sent: Monday, 2 March 2015 9:21 PM
To: James Andrewartha
Cc: Justin Steinberg; chris; Cisco VOIP
Subject: Re: [cisco-voip] FXS voltages / POTS compatibility

James,

Does this mean you have an h323 gateway? Right now, I have MGCP, which I'm 
guessing, precludes me from doing this.

Sent from my iPhone

On Mar 2, 2015, at 7:51 AM, James Andrewartha 
<jandrewar...@ccgs.wa.edu.au<mailto:jandrewar...@ccgs.wa.edu.au>> wrote:

With our security systems I have to remove the call manager from the call path 
for the system to complete due to the nonstandard tones they send. From my 
notes on how to configure this:

On the VG224s:

voice class h323 1
  h225 timeout tcp establish 3
voice-port 2/13
  no timeouts
dial-peer voice 23 pots
  service stcapp
dial-peer voice 99 voip
  description h323 direct to voip1 for alarm number
  destination-pattern 13451015
  session target ipv4:10.101.0.5
  voice-class h323 1
  codec g711ulaw
  no vad
dial-peer voice 98 voip
  description h323 direct to voip2 for alarm number
  preference 1
  destination-pattern 13451015
  session target ipv4:10.101.0.6
  voice-class h323 1
  codec g711ulaw
  no vad

On the 2921s:

voice service voip
ip address trusted list
  ipv4 10.100.0.10 255.255.255.255

The AVG is 10.100.0.10, the 2921s are 10.101.0.5 and .6, and dial-peer voice 23 
is for voice-port 2/13. These are GE security panels I think (which their MAC 
OUI confirms).

--
James Andrewartha
Network & Projects Engineer
Christ Church Grammar School
Claremont, Western Australia
Ph. (08) 9442 1757
Mob. 0424 160 877

From: Justin Steinberg <jsteinb...@gmail.com<mailto:jsteinb...@gmail.com>>
Date: Monday, 2 March 2015 2:14 am
To: chris <tknch...@gmail.com<mailto:tknch...@gmail.com>>
Cc: Cisco VOIP <cisco-voip@puck.nether.net<mailto:cisco-voip@puck.nether.net>>
Subject: Re: [cisco-voip] FXS voltages / POTS compatibility


Are you using local h323 or sip 'pots' dialpeers to route directly between your 
FXS and T1 port?  Or is call manager in between the call due to MGCP or VOIP 
dialpeers involved in the dialplan ?

I doubt your issue is line voltage, since you can see the call being placed.  
My guess is the DSP is processing the call and causing issues.  I've seem alarm 
boxes use nonstandard DTMF transmission that isn't properly recognized by the 
DSP.

The 2800 supports DSP bypass by default when you route directly between ports 
using POTS dialpeers.   You do need to have properly configured network clock 
configuration.

Can you send a copy of your config along with the output of 'show controller 
t1' and 'show network-clock'

Justin

On Feb 28, 2015 10:33 PM, "chris" 
<tknch...@gmail.com<mailto:tknch...@gmail.com>> wrote:
Hey Ryan,

We have a channelized T1 with channels split between voice/data so the voice 
path is TDM. We have a VIC-4FXS/DID and for each of the two ports we have a 
single copper pair with rj11 on both ends, one side going to the FXS port and 
the other is going into alarm panel. The total distance from the 2800 to the 
alarm panel is around 20-30 feet and its a direct run, no 66 blocks or anything 
in between.
Don't know model of the panel (this is another location)

>From what I've read I think the problem is the default idle-voltage the 
>VIC-4FXS/DID is only -24V but based on the link I sent in the first email I 
>thought this could be reconfigured through the idle-voltage option but this 
>doesnt seem to be available when I try to enter it under the voice-port. When 
>I talked to the alarm company and told them I see the calls going through the 
>guy told me the alarm doesn't check the line state based on the dialtone and 
>he said that it uses the voltage to see when the line is idle, ringing, etc 
>and I think this is where the problem lies.

Someone recommend this adapter offlist which looks interesting but the price is 
a little nuts as it costs more than all the equipment we have installed at this 
site combined.
http://www.homedepot.com/p/Viking-1-Line-Long-Loop-Adapter-VK-LLA-1/204399995

Chris


On Sat, Feb 28, 2015 at 8:18 PM, Ryan Huff 
<ryanh...@outlook.com<mailto:ryanh...@outlook.com>> wrote:

Chris,

Can you diagram the connections for me?

Are the copper pairs swinging off a 66 block before terminating to the alarm 
panel or is there a direct copper path between the fxs port and the alarm? Are 
you using an RJ-11 or RJ-14 configuration?

Could you estimate the copper distance between the termination points?

Is the pstn path for the VG SIP or TOM?

Also, I would be curious to know if the alarm panel is a Simplex Grinnell?

Thanks,

Ryan


-------- Original Message --------
From: chris <tknch...@gmail.com<mailto:tknch...@gmail.com>>
Sent: Saturday, February 28, 2015 07:52 PM
To: cisco-voip@puck.nether.net<mailto:cisco-voip@puck.nether.net>
Subject: [cisco-voip] FXS voltages / POTS compatibility


Hello

We have a location with a 2800 acting as a voice gateway where we have 2 FXS 
voice ports going to an alarm system. We are using the vic-4fxs/did line card.

We have the alarm company saying they are seeing the panel reporting Comm 
trouble so we checked the call records and we also did some debugging in 
realtime and we see the calls are going out and when we plug a test set in the 
dial tone is good.

In talking with the alarm company and researching we have come to believe the 
issue may be due to the idle and ringing voltages. We came across this link:

http://www.cisco.com/c/en/us/support/docs/voice/analog-signaling-e-m-did-fxs-fxo/28280-ring-idle-voltages-fxs.html

This looked promising however when we are in voice port configuration node we 
do not have the idle-voltage setting available. We tried several iOS versions 
in 12.4 as well as 15.x hut no luck

Is this line card not capable of -48 idle voltage? What cards are? Do we need 
anything special as far iOS version?

Ideally we want to have 2 voice ports that are as close to a standard pots line 
as possible.

We are a bit lost as its the first time we have hit an issue like this and we 
are just hoping someone has been down this path before. If we have to change 
line cards or even to another platform we are open to it as long if someone has 
a setup that is known working in this manner

Thanks in advance
Chris

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