Re: Hybrid outbound call showing 404 Not Found in Search History

PWJPW · ‎03-17-2019

Our hardware VM died and we rehosted our VMs on a new ESXI server.

Everything working great including inbound but I can't get calling PSTN numbers from the Webex Teams app to work.

We exported and imported the guest VMs (CUCM, Exp C and E) so no settings have changed.

When we make a PSTN call from Webex Teams the call doesn't connect and Exp E is showing 404 not found on the final leg. It appears to be trying the Default Zone instead of matching the ciscospark.com search rule so it never reaches my VCS-C server. I think that is wrong?

Call flow: Dialled 0800800150 from my Webex Teams app.

cucmpub.abcd.com is my CUCM server.

james@mycompany.call.ciscospark.com is my Webex Teams URI.

Search history below:

Search (41)
State: Completed
Found: False
Reason: Not found
Type: SIP (INVITE)
SIPVariant: Standards-based
CallSerial Number: 9d09ffea-a894-494b-ad8d-747fe195e6ec
Tag: 699ee272-e8ba-42ef-8bd9-ae80f7831d52
Source (1)
Authenticated: True
Aliases (1)
Alias (1)
Type: Url
Origin: Unknown
Value: james@mycompany.call.ciscospark.com
Zone (1)
Name: Spark_DNS
Type: DNS
Path (1)
Hop (1)
Address: l2sip-cfa-02.wbx2.com:5062
Hop (2)
Address: 127.0.0.1:5070
Destination (1)
Alias (1)
Type: Url
Origin: Unknown
Value: sip:0800800150@cucmpub.abcd.com;user=phone
StartTime: 2019-03-17 11:46:54
Duration: 0.06
SubSearch (1)
Type: Directed
Path (1)
Hop (1)
Address: 62.252.x.x
Hop (2)
Address: cucmpub.abcd.com
SubSearch (1)
Type: Admin Policy
Action: Proxy
ResultAlias (1)
Type: H323Id
Origin: Unknown
Value: sip:0800800150@cucmpub.abcd.com;user=phone;box-call-serial-number=c18a65df-42d0-4990-a97b-05fb59c18ab8
Zone (1)
Name: DefaultZone
Type: Default
Protocol: SIP
Found: False
Reason: Not found
StartTime: 2019-03-17 11:46:54
Duration: 0.06
Gatekeeper (1)
Address: 172.16.31.251:5071
Alias (1)
Type: H323Id
Origin: Unknown
Value: sip:0800800150@cucmpub.abcd.com;user=phone;box-call-serial-number=c18a65df-42d0-4990-a97b-05fb59c18ab8

Is the 404 coming from itself, VCS C or CUCM?

Call Details

Call information
State	Connection Failed
Start time	2019-03-17 11:46:54
End time	2019-03-17 11:46:54
Duration	0 seconds
Tag	699ee272-e8ba-42ef-8bd9-ae80f7831d52
Serial number	9d09ffea-a894-494b-ad8d-747fe195e6ec
Type	Video
SIP variant	Standards-based

Bandwidth
Requested	16064 kbps
Allocated	16064 kbps
Route	Spark_DNS -> Zone005ToTraversalSZ -> TraversalSubZone -> TraversalSZtoDefaultZ -> DefaultZone

Leg 1
Bandwidth node	Spark_DNS
Source alias 1	sip:james@mycompany.call.ciscospark.com (Url)
Target alias 1	sip:0800800150@cucmpub.abcd.com;user=phone (Url)
Protocol	SIP
Address	18.217.166.80:34681
Transport	TLS
Reason	Not found
Cause	404

Leg 2
Bandwidth node	Default zone
Target alias 1	sip:0800800150@abcd.purplewifi.com;user=phone (Url)
Protocol	SIP
Address	62.252.x.x:5062
Transport	TLS

Leg 3
Bandwidth node	Default zone
Target alias 1	sip:0800800150@cucmpub.abcd.com;user=phone (Url)
Protocol	SIP
Address	172.16.31.251:5071
Transport	TLS
Encryption type	None

Session 1
Status	Replaced
Media routed	False
Call routed	True
Participant 1	Leg 1
Participant 2	Leg 2
Bandwidth allocated	0 kbps
Bandwidth requested	0 kbps

Session 2
Status	Failed
Media routed	False
Call routed	True
Participant 1	Leg 1
Participant 2	Leg 3
Bandwidth allocated	16064 kbps
Bandwidth requested	16064 kbps
Route	Spark_DNS -> Zone005ToTraversalSZ -> TraversalSubZone -> TraversalSZtoDefaultZ -> DefaultZone

Zones

DefaultZone Default zone 0 0 kbps Off On 
B2B External DNS 0 0 kbps Off On Enabled search rules: 1 
Spark_DNS DNS 0 0 kbps Off On Enabled search rules: 1 
Spark_to_VCS-C Traversal server 0 0 kbps Off Active Enabled search rules: 1 
Unified Traversal Unified Communications traversal 0 0 kbps Off Active Enabled search rules: 2; disabled search rules: 1
VCS-C Traversal Zone Traversal server 0 0 kbps Off Active No search rules configured 
Webex Zone Webex 0 0 kbps Off On Enabled search rules: 1

Search Rules

49 Webex DNS SIP Any No Alias pattern match Regex (.*)@(.*)(\.webex\.com).* Replace Stop Webex Zone All SIP Variants 
50 Incoming SIP Any No Alias pattern match Regex ^\S+@abcd.com Leave Stop Unified Traversal All SIP Variants
51 Incoming2 SIP Any No Alias pattern match Regex ^\S+@cucmpub.abcd.com Leave Stop Unified Traversal All SIP Variants
52 B2B External Any VCS-C Traversal Zone No Alias pattern match Regex ^\S+@\S+$ Leave Continue B2B External Any
100 From Spark Hybrid to Exp-C SIP Spark_DNS No Any alias Stop Spark_to_VCS-C All SIP Variants
100 From Unified CM to Spark Hybrid SIP Spark_to_VCS-C No Alias pattern match Regex .*@.*\.ciscospark\.com Leave Stop Spark_DNS All SIP Variants
102 LocalZoneMatch Any Any No Any alias Continue Unified Traversal Any

I really appreciate your help.

Thanks

James

PWJPW · ‎03-17-2019

Really sorry to bump but I have until the morning before the office re-opens after the weekend and really looking for some community help.
Thanks
James

DON PETERSON · ‎03-18-2019

We're having the exact same problem. But we had it working, upgraded the Expressway and CUCM servers to the latest version then it stopped working. No matter what I do, inbound calls from Webex and Webex Teams hit the default zone (search rule) instead of the hybrid inbound rule. I have a case open with TAC but it's going on 4 days now and they have nothing. I'll update this if we make any progress.

mlong0000 · ‎05-16-2019

Hi, did you find a cause for this problem? I'm experiencing the same.

PWJPW · ‎05-17-2019

We did solve it, in our case it was due to the network setup as it was natting and thus sending the traffic to the wrong place. I fixed it my enabling the IPv4 static NAT mode on the System > Network > IP page. Set both of these:

IPv4 static NAT mode: On

IPv4 static NAT address: Your public IP

Webex Teams Hybrid Calls not working to outbound numbers (Urgent)