[cisco-voip] Door Opener Ring Delay

[Daniel Pagan]

If you’re still wondering where the problem might reside, I would run a debug MGCP packet or debug h225 event (asn1 is too verbose for this purpose) depending on the protocol in use. For MGCP, you should see a Notify (NTFY) where the Observe event is O: L/hd – which means it detected an off-hook event (/hd). For H225, you should see a h225 SETUP message transmitted from the router. If any of those events are delayed, the issue is resides at or behind the router. Further, back to the VPM signal debugs you mentioned -if you don’t see the onhook_offhook (on hook to off hook) event until seconds later, we can safely say the issue is not the router and the problem resides at the Valcom device.

Looking at the Valcom 2901A manual shows there’s a few delay timers that can be tweaked.
http://www.valcom.com/pdf/v-2901a.pdf

“When indication arrives that a door is open while door station is inactive, such as a break-in, the system waits the programmed period of time (entry delay time) for a confirmation of entry indicating the opening as legitimate”

Not sure if this have been investigated but it might prove to be helpful. Pg 9 mentions the process for adjusting the entry delay time.

Hope this helps.

- Daniel


From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Steven Sarte
Sent: Thursday, September 18, 2014 8:47 AM
To: Charles Goldsmith
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Door Opener Ring Delay

When trying with an analog phone, no delay.

What I did notice is that when running the debug vpm signal, the door button is pressed their is a delay about 10-12 seconds then the IP Phone rings and then I start seeing the debugs.

Of course Cisco and Valcom state their are no issues.

On Thu, Sep 18, 2014 at 12:21 AM, Charles Goldsmith <wokka at justfamily.org<mailto:wokka at justfamily.org>> wrote:
Is there a delay when you plug it into an analog and take the router out of the pic?  What I'm really asking, is the delay in the valcom or your router/CUCM?

On Wed, Sep 17, 2014 at 9:40 PM, Steven Sarte <steven.sarte at gmail.com<mailto:steven.sarte at gmail.com>> wrote:
Anyone have experience with a Valcom 2901A door opener.  Have it working with my 2911 and CUCM with an FXO port but their is a significant delay when you press the button and when the IP Phone rings.

Tried both H.323 and MGCP with no difference.

Current config:
voice-port 0/1/0
 connection plar 8999
 description Valcom V-2901A Door Opener
 station-id name Door

dial-peer voice 101 voip
 destination-pattern 8999
 session target ipv4:<CUCM IP>
 voice-class codec 1
 voice-class h323 1
 dtmf-relay h245-alphanumeric
 no vad

I did try connection plar 8999 immediate (no change)
als connection plar opx 8999 (no change)

Thanks in advanced
Steven

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