V1.0.22 - Slow connection

[janofsky]

I have installed 3cx 1.0.22 on and Iphone. The phone registers via wifi to my 3cx pbx or via 3g thru the tunnel to my 3cx pbx. However the app is soooo slow, after hitting the call button it takes over 90 seconds to be call another extension. It also takes over 90 seconds after receiving an incoming ring and pressing answer for the phone to answer. In the meantime the Iphone is non-responsive. The same is true when I register to another SIP provider. Any suggestions.

Eric

 

[StefanW]

Re: 3cx App for Iphone 4 4 4.2.1 just sooooooo slow

http://www.3cx.com/forums/every-new-post-must-contain-18726.html

 

[janofsky]

Re: 3cx App for Iphone 4 4 4.2.1 just sooooooo slow

3cx App for Iphone 4 4 4.2.1 just sooooooo slow
by janofsky » Sun Jan 30, 2011 10:02 pm

I have installed 3cx 1.0.22 on and Iphone. The phone registers via wifi to my 3cx pbx or via 3g thru the tunnel to my 3cx pbx. However the app is soooo slow, after hitting the call button it takes over 90 seconds to be call another extension. It also takes over 90 seconds after receiving an incoming ring and pressing answer for the phone to answer. In the meantime the Iphone is non-responsive. The same is true when I register to another SIP provider. Any suggestions.

Eric
Device Info
-------------------------------------------------------
Phone Model: [iPhone
Generation: ,,4G,
Firmware Version: [4.2.1]
Jailbreak: |NO]
Cydia Installed:|NO]

Issue Info
-------------------------------------------------------
Handset: [Phone|
Contacts: |Exchange|e]
Connection: [WiFi|3G] same problem with both
Server: [Internal|External] same problem with both

 

[StefanW]

re: 3CX Tunnel? In the 3CxPhoen for iphone is no tunnel integrated. so how you do this? Do you use 3CX Sip Proxy manager?

Give me pls a screenshot when the phone "hangs" to see what you dial and how the keyboard looks like.
Also is your PBX on Port 5060?
Do you have BT connected devices to the phone?

 

[janofsky]

re: 3CX Tunnel? In the 3CxPhoen for iphone is no tunnel integrated. so how you do this?


When I am external to my network, I use the tunnel. The iphone registers but takes forever to dial
Do you use 3CX Sip Proxy manager?no

I have no problem using the 3CX client from my laptop with or without the tunnel. I do not use the tunnel when I am in side my network

Give me pls a screenshot when the phone "hangs" to see what you dial and how the keyboard looks like.
Please see this youtube video


http://www.youtube.com/watch?v=_wUdO9LiDpQ

Also is your PBX on Port 5060?

Yes
Do you have BT connected devices to the phone?

No


I have also tried to use Gizmo proxy01sipphone,com. the iphone registers but response is very slow. I have no problem with my pc 3cx client.

 

[shiftf7]

I have exactly the same issue with the 3CX iphone app - everything works but it takes approx 30 seconds from hitting the dial button for the phone to actually dial anything (including internal extentions). This happens on both my iPAD and my iPhone - both internally or externally. Once the call has connected - it works fine. Just seems to be a huge delay somewhere in the initial connection.

The above video is exactly the issue - apart from a slightly smaller delay of 30 second.

Device Info
-------------------------------------------------------
Phone Model: iPAD V1 and iPhone 3Gs
Generation: 3Gs
Firmware Version: 4.2.1
Jailbreak: NO
Cydia Installed: NO

Issue Info
-------------------------------------------------------
Handset: Phone
Contacts: Local
Connection: WiFi
Server: Internal

 

[StefanW]

we most likely found the source of the issue.
Plz run a test for me, can you plug an head set in the device with a mic (which comes with the iPhone)?I have the feeling we try to find an audio source which is not present at the time and we hang in an ideal time out...

 

[janofsky]

No improvement, it still took about 5 minutes to call from internal to the network.

:26.859

Currently active calls [none]

16:43:01.750

[CM504001]: Ext.13: new contact is registered. Contact(s): [sip:[email protected]:5060/13,sip:[email protected]:5060/13,sip:[email protected]:5060/13,sip:[email protected]:55522/13]

16:42:56.562

Currently active calls [none]

16:42:24.531

Currently active calls [none]

16:41:54.421

Currently active calls [none]

16:41:24.390

Currently active calls [none]

16:40:54.250

Currently active calls [none]

16:40:24.078

Currently active calls [none]

16:39:52.078

Currently active calls [none]

16:39:21.484

Currently active calls [none]

16:38:51.390

Currently active calls [none]

16:38:33.203

[CM503008]: Call(14): Call is terminated

16:38:21.296

Currently active calls - 1: [14]

16:38:11.609

[MS210005] C:14.1:Answer provided. Connection(proxy mode):192.168.163.75:7052(7053)

16:38:11.609

[MS210001] C:14.3:Answer received. RTP connection[unsecure]: 127.0.0.1:40610(40611)

16:38:11.609

Remote SDP is set for legC:14.3

16:38:11.343

[MS210004] C:14.3:Offer provided. Connection(proxy mode): 127.0.0.1:7056(7057)

16:38:11.296

[MS210000] C:14.1:Offer received. RTP connection: 192.168.163.120:4000(4001)

16:38:11.281

Remote SDP is set for legC:14.1

16:38:10.906

Session 25362 of leg C:14.1 is confirmed

16:38:10.750

[CM503007]: Call(14): Device joined: sip:[email protected]:40600;rinstance=6dd5c7167d4f53c3

16:38:10.734

[CM503007]: Call(14): Device joined: sip:[email protected]:5060

16:38:10.718

[MS210005] C:14.1:Answer provided. Connection(proxy mode):192.168.163.75:7052(7053)

16:38:10.703

[MS210001] C:14.3:Answer received. RTP connection[unsecure]: 127.0.0.1:40610(40611)

16:38:10.703

Remote SDP is set for legC:14.3

16:38:10.687

[CM505001]: Ext.99: Device info: Device Identified: [Man: 3CX Ltd.;Mod: Voice Mail Menu;Rev: 1] Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CX Voice Mail Menu] PBX contact: [sip:[email protected]:5060]

16:38:10.687

[CM503002]: Call(14): Alerting sip:[email protected]:40600;rinstance=6dd5c7167d4f53c3

16:38:09.937

[CM503003]: Call(14): Call to sip:[email protected]:5060 has failed; Cause: 487 Request Terminated; from IP:192.168.163.190:60126

16:38:09.765

[CM503025]: Call(14): Calling Ext:Ext.99@[Dev:sip:[email protected]:40600;rinstance=6dd5c7167d4f53c3]

16:38:09.750

[MS210004] C:14.3:Offer provided. Connection(proxy mode): 127.0.0.1:7056(7057)

16:38:09.718

[CM503005]: Call(14): Forwarding: Ext:Ext.99@[Dev:sip:[email protected]:40600;rinstance=6dd5c7167d4f53c3]

16:37:50.703

Currently active calls - 1: [14]

16:37:39.890

[CM505001]: Ext.14: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CXPhone 5.0.14900.0] PBX contact: [sip:[email protected]:5060]

16:37:39.890

[CM503002]: Call(14): Alerting sip:[email protected]:60126;rinstance=eca5c3dee0aa92af

16:37:39.671

[CM503025]: Call(14): Calling Ext:Ext.14@[Dev:sip:[email protected]:60126;rinstance=eca5c3dee0aa92af]

16:37:39.656

[MS210006] C:14.2:Offer provided. Connection(by pass mode): 192.168.163.120:4000(4001)

16:37:39.656

[MS210000] C:14.1:Offer received. RTP connection: 192.168.163.120:4000(4001)

16:37:39.625

Remote SDP is set for legC:14.1

16:37:39.609

[CM503004]: Call(14): Route 1: Ext:Ext.14@[Dev:sip:[email protected]:60126;rinstance=eca5c3dee0aa92af]

16:37:39.609

[CM503010]: Making route(s) to <sip:[email protected]>

16:37:39.609

[CM505001]: Ext.13: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CXPhone for iPhone 1.0.22] PBX contact: [sip:[email protected]:5060]

16:37:39.578

[MS210000] C:14.1:Offer received. RTP connection: 192.168.163.120:4000(4001)

16:37:39.562

Remote SDP is set for legC:14.1

16:37:39.562

[CM503001]: Call(14): Incoming call from Ext.13 to <sip:[email protected]>

16:37:39.546

[CM500002]: Info on incoming INVITE:



INVITE sip:[email protected] SIP/2.0



Via: SIP/2.0/UDP 192.168.163.120:5060;rport=5060;branch=z9hG4bKPjmhVImQ8I1khuiR3Tyuye2Y2Y6EDXCbxX



Max-Forwards: 70



Contact: "3cx home"<sip:[email protected]:5060>



To: <sip:[email protected]>



From: "3cx home"<sip:[email protected]>;tag=XLSO-G9Fz5Khn65OlXgnnaL2F2aQ64E.



Call-ID: EOhesGuno0dfFUayAoKUOl86.sTBJiMG



CSeq: 17989 INVITE



Session-Expires: 1800



Min-SE: 90



Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS



Proxy-Authorization: Digest username="13",realm="3CXPhoneSystem",nonce="414d535c0367b8d345:9f861bd015a3145f2074cfb8ccf22642",uri="sip:[email protected]",response="add9380a50bfc304876dbbfcb70df1df",algorithm=MD5



Supported: replaces, 100rel, timer, norefersub



User-Agent: 3CXPhone for iPhone 1.0.22



Content-Length: 0





16:37:20.578

Currently active calls [none]

16:36:48.562

Currently active calls [none]

16:36:18.109

Currently active calls [none]

16:35:46.109

Currently active calls [none]

16:35:15.968

Currently active calls [none]

16:35:15.796

[MS105000] C:13.2: No RTP packets were received:remoteAddr=130.94.88.94:18844,extAddr=0.0.0.0:0,localAddr=192.168.163.75:7050

16:35:14.515

[CM503008]: Call(13): Call is terminated

16:35:11.875

Session 25330 of leg C:13.1 is confirmed

16:35:11.843

[CM503007]: Call(13): Device joined: sip:[email protected]:5060

16:35:11.812

[CM503007]: Call(13): Device joined: sip:[email protected]:5060

16:35:11.796

[MS210003] C:13.1:Answer provided. Connection(transcoding mode[unsecure]):192.168.163.75:7048(7049)

16:35:11.796

[MS210001] C:13.2:Answer received. RTP connection[unsecure]: 130.94.88.94:18844(18845)

16:35:11.781

Remote SDP is set for legC:13.2

16:35:11.781

[CM505003]: Provider:[Gizmo 17472721772] Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [] PBX contact: [sip:[email protected]:5060]

16:35:11.781

[CM503002]: Call(13): Alerting sip:[email protected]:5060

16:35:11.109

[CM503025]: Call(13): Calling VoIPline:18005551212@(Ln.10009@Gizmo 17472721772)@[Dev:sip:[email protected]:5060]

16:35:11.062

[MS210002] C:13.2:Offer provided. Connection(transcoding mode): 192.168.163.75:7050(7051)

16:35:11.031

[CM503004]: Call(13): Route 1: VoIPline:18005551212@(Ln.10009@Gizmo 17472721772)@[Dev:sip:[email protected]:5060]

16:35:10.968

[CM503010]: Making route(s) to <sip:[email protected]>

16:35:10.968

[MS210000] C:13.1:Offer received. RTP connection: 192.168.163.59:16400(16401)

16:35:10.968

Remote SDP is set for legC:13.1

16:35:10.968

[CM505001]: Ext.12: Device info: Device Identified: [Man: Linksys;Mod: SPA series;Rev: General] Capabilities:[reinvite, no-replaces, able-no-sdp, recvonly] UserAgent: [Linksys/SPA3102-5.1.10(GW)] PBX contact: [sip:[email protected]:5060]

16:35:10.921

[CM503001]: Call(13): Incoming call from Ext.12 to <sip:[email protected]>

16:35:10.890

[CM500002]: Info on incoming INVITE:



INVITE sip:[email protected] SIP/2.0



Via: SIP/2.0/UDP 192.168.163.59:5060;branch=z9hG4bK-4126e96f



Max-Forwards: 70



Contact: "12"<sip:[email protected]:5060>



To: <sip:[email protected]>



From: "12"<sip:[email protected]>;tag=1c8d2bd02cf86ae3o0



Call-ID: [email protected]



CSeq: 102 INVITE



Expires: 240



Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER



Proxy-Authorization: Digest username="12",realm="3CXPhoneSystem",nonce="414d535c0367b83e74:2ebfee156173f52a117d61cfcf97528c",uri="sip:[email protected]",algorithm=MD5,response="503dd0b050c8562493013c32c2cf420a"



Supported: x-sipura, replaces



User-Agent: Linksys/SPA3102-5.1.10(GW)



Content-Length: 0



Remote-Party-ID: 12 <sip:[email protected]>;screen=yes;party=calling





16:35:15.968

Currently active calls [none]

16:35:15.796

[MS105000] C:13.2: No RTP packets were received:remoteAddr=130.94.88.94:18844,extAddr=0.0.0.0:0,localAddr=192.168.163.75:7050

16:35:14.515

[CM503008]: Call(13): Call is terminated

16:35:11.875

Session 25330 of leg C:13.1 is confirmed

16:35:11.843

[CM503007]: Call(13): Device joined: sip:[email protected]:5060

16:35:11.812

[CM503007]: Call(13): Device joined: sip:[email protected]:5060

16:35:11.796

[MS210003] C:13.1:Answer provided. Connection(transcoding mode[unsecure]):192.168.163.75:7048(7049)

16:35:11.796

[MS210001] C:13.2:Answer received. RTP connection[unsecure]: 130.94.88.94:18844(18845)

16:35:11.781

Remote SDP is set for legC:13.2

16:35:11.781

[CM505003]: Provider:[Gizmo 17472721772] Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [] PBX contact: [sip:[email protected]:5060]

16:35:11.781

[CM503002]: Call(13): Alerting sip:[email protected]:5060

16:35:11.109

[CM503025]: Call(13): Calling VoIPline:18005551212@(Ln.10009@Gizmo 17472721772)@[Dev:sip:[email protected]:5060]

16:35:11.062

[MS210002] C:13.2:Offer provided. Connection(transcoding mode): 192.168.163.75:7050(7051)

16:35:11.031

[CM503004]: Call(13): Route 1: VoIPline:18005551212@(Ln.10009@Gizmo 17472721772)@[Dev:sip:[email protected]:5060]

16:35:10.968

[CM503010]: Making route(s) to <sip:[email protected]>

16:35:10.968

[MS210000] C:13.1:Offer received. RTP connection: 192.168.163.59:16400(16401)

16:35:10.968

Remote SDP is set for legC:13.1

16:35:10.968

[CM505001]: Ext.12: Device info: Device Identified: [Man: Linksys;Mod: SPA series;Rev: General] Capabilities:[reinvite, no-replaces, able-no-sdp, recvonly] UserAgent: [Linksys/SPA3102-5.1.10(GW)] PBX contact: [sip:[email protected]:5060]

16:35:10.921

[CM503001]: Call(13): Incoming call from Ext.12 to <sip:[email protected]>

16:35:10.890

[CM500002]: Info on incoming INVITE:



INVITE sip:[email protected] SIP/2.0



Via: SIP/2.0/UDP 192.168.163.59:5060;branch=z9hG4bK-4126e96f



Max-Forwards: 70



Contact: "12"<sip:[email protected]:5060>



To: <sip:[email protected]>



From: "12"<sip:[email protected]>;tag=1c8d2bd02cf86ae3o0



Call-ID: [email protected]



CSeq: 102 INVITE



Expires: 240



Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, REFER



Proxy-Authorization: Digest username="12",realm="3CXPhoneSystem",nonce="414d535c0367b83e74:2ebfee156173f52a117d61cfcf97528c",uri="sip:[email protected]",algorithm=MD5,response="503dd0b050c8562493013c32c2cf420a"



Supported: x-sipura, replaces



User-Agent: Linksys/SPA3102-5.1.10(GW)



Content-Length: 0



Remote-Party-ID: 12 <sip:[email protected]>;screen=yes;party=calling





16:34:43.968

Currently active calls [none]

16:34:13.765

Currently active calls [none]

16:33:58.312

[CM504001]: Ext.13: new contact is registered. Contact(s): [sip:[email protected]:5060/13,sip:[email protected]:5060/13,sip:[email protected]:55522/13]

16:33:57.26

Re: V1.0.22 - Slow connection
by StefanW » Fri Feb 11, 2011 2:35 am

we most likely found the source of the issue.
Plz run a test for me, can you plug an head set in the device with a mic (which comes with the iPhone)?I have the feeling we try to find an audio source which is not present at the time and we hang in an ideal time out...

 

[StefanW]

the log only shows me that you call from 13 to 14 and 14 dont pick up so you end up at 99.
But i have the feeling that the start of the call dowsa not reach the pbx at the beginning so there the call hangs.
and this i can not see in the logs.

 

[shiftf7]

I tried with the headphones - there is still a 13-15 second delay from the time I press the dial button and connection to the PBX. So still a problem. iPhone is x102 dialing DR on 803.

09:53:01.536 [CM503008]: Call(4259): Call is terminated
09:52:56.771 [MS210005] C:4259.1:Answer provided. Connection(proxy mode):172.22.22.208:7018(7019)
09:52:56.770 [MS210001] C:4259.2:Answer received. RTP connection[unsecure]: 127.0.0.1:40832(40833)
09:52:56.769 Remote SDP is set for legC:4259.2
09:52:56.564 [MS210004] C:4259.2:Offer provided. Connection(proxy mode): 127.0.0.1:7020(7021)
09:52:56.563 [MS210000] C:4259.1:Offer received. RTP connection: 172.22.22.35:4004(4005)
09:52:56.562 Remote SDP is set for legC:4259.1
09:52:56.355 Session 665870 of leg C:4259.1 is confirmed
09:52:56.151 [CM503007]: Call(4259): Device joined: sip:[email protected]:40600;rinstance=30b5e299784e750a
09:52:56.149 [CM503007]: Call(4259): Device joined: sip:[email protected]:5060
09:52:56.147 [MS210005] C:4259.1:Answer provided. Connection(proxy mode):172.22.22.208:7018(7019)
09:52:56.144 [MS210001] C:4259.2:Answer received. RTP connection[unsecure]: 127.0.0.1:40832(40833)
09:52:56.142 Remote SDP is set for legC:4259.2
09:52:56.137 [CM505001]: Ext.803: Device info: Device Identified: [Man: 3CX Ltd.;Mod: 3CX IVR;Rev: 1] Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CX IVR] PBX contact: [sip:[email protected]:5060]
09:52:56.137 [CM503002]: Call(4259): Alerting sip:[email protected]:40600;rinstance=30b5e299784e750a
09:52:55.988 [CM503025]: Call(4259): Calling Ext:Ext.803@[Dev:sip:[email protected]:40600;rinstance=30b5e299784e750a]
09:52:55.986 [MS210004] C:4259.2:Offer provided. Connection(proxy mode): 127.0.0.1:7020(7021)
09:52:55.942 [CM503004]: Call(4259): Route 1: Ext:Ext.803@[Dev:sip:[email protected]:40600;rinstance=30b5e299784e750a]
09:52:55.941 [CM503010]: Making route(s) to <sip:[email protected]>
09:52:55.941 [MS210000] C:4259.1:Offer received. RTP connection: 172.22.22.35:4004(4005)
09:52:55.940 Remote SDP is set for legC:4259.1
09:52:55.939 [CM505001]: Ext.102: Device info: Device Not Identified: User Agent not matched; Capabilities:[reinvite, replaces, able-no-sdp, recvonly] UserAgent: [3CXPhone for iPhone 1.0.22] PBX contact: [sip:[email protected]:5060]
09:52:55.934 [CM503001]: Call(4259): Incoming call from Ext.102 to <sip:[email protected]>
09:52:55.930 [CM500002]: Info on incoming INVITE:
INVITE sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 172.22.22.35:5060;rport=5060;branch=z9hG4bKPjOlVdMebJdNrGe9VEQDlC364JAjQZSVDW
Max-Forwards: 70
Contact: "Andrew"<sip:[email protected]:5060>
To: <sip:[email protected]>
From: "Andrew"<sip:[email protected]>;tag=F4KULMPGjVuWFTTVZkJ4Owi5mJrjwCIH
Call-ID: 6CtgKpccsC7fIEgI3UvyDDNRK7v6jYJj
CSeq: 19759 INVITE
Session-Expires: 1800
Min-SE: 90
Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
Proxy-Authorization: Digest username="102",realm="3CXPhoneSystem",nonce="414d535c03698c7790:b46e5431bb9130293c0c0680d6066425",uri="sip:[email protected]",response="16f5176b4f90e861be05582d76c805ea",algorithm=MD5
Supported: replaces, 100rel, timer, norefersub
User-Agent: 3CXPhone for iPhone 1.0.22
Content-Length: 0

09:52:48.811 Currently active calls [none]

 

[StefanW]

the probl. cant be traced by the log of the pbx.
if you start makign the call the call is stuck in the phone.
if u press the reload button in the pbx after you dialed in the phone you will see the call is not at this stage in the system.
so pbx dont know about the call at this time...

 

[janofsky]

the probl. cant be traced by the log of the pbx.
if you start makign the call the call is stuck in the phone.
if u press the reload button in the pbx after you dialed in the phone you will see the call is not at this stage in the system.
so pbx dont know about the call at this time...

That was my point, the 3cx iphone client is stuck.

I tried making a call from a 3cx pc client to the 3cx iphone client. The iphone rang relatively quickly but when I tried to answer the iphone would not pick up in a reasonable amount of time (60 seconds) and then I terminated the call from the 3cx pc client but the iphone kept on ringing and I had to terminate the 3cx client on the iphone.

Any suggestions?

 

[lynnabelone]

Hello all,
I am new member of this forum.So I have bought a new Iphone.But The connection was very slow.Please give me some ideas.Thanks.

 

[shiftf7]

I agree, the delay seems on the iPhone device not the PBX. Is there a way to solve this issue please?

 

[StefanW]

we send 2day a new version to apple to be uploaded to the app store, lets see if this fixes the issues and take it from there

 

[sfweb]

I also facing same problem.

I have installed 3cx 1.0.22 on and Iphone. The phone registers via wifi to my 3cx pbx or via 3g thru the tunnel to my 3cx pbx. However the app is soooo slow, after hitting the call button it takes over 90 seconds to be call another extension. It also takes over 90 seconds after receiving an incoming ring and pressing answer for the phone to answer. In the meantime the Iphone is non-responsive. The same is true when I register to another SIP provider. Any suggestions.

Eric

 

[StefanW]

so new version is out, plz give it a go, leave TCP off for now, due to we brought back the MultiTask by Force

 

[shiftf7]

Stefan,
Thank you for the update, I installed this lastest version 1.0.23 and I still have the delay between hitting the green dial button and contact with the 3CX systems (around 12 seconds). It is the same as it was in 1.0.22.
I have tried it with earphones and with/without Bluetooth enabled - but no change in behaviour.
Same on local LAN or remote - perhaps I should get an Android phone
Andrew.

 

[janofsky]

Stefan

there is still a delay. is there a debug feature which I can provide you?

Eric

 

[Vali_3CX]

Hi Eric, Andrew

Currently we are working to review/redesign our "mobile" versions of our 3CXPhone - I mean for Android and iPhone. In case of iPhone, all 1.0.21-1.0.23 tried to address/fix some significant bugs and issues and to make it more stable. Next release has already planned to review the whole audio support. You may try the Android version, obviously, but my opinion is that at this current stage, the iPhone's is more stable and reliable.

Regards
vali