<div dir="auto"><div>Hi, I knew, But i have not access to ZTE's pcscf.</div><div dir="auto">Thank you. </div><div dir="auto">But what about my question?Why the UE could not register via SEMS?</div><div dir="auto"><br></div><div dir="auto"><br><div class="gmail_quote" dir="auto"><div dir="ltr">On Mon, 27 Aug 2018 15:40 Ivailo Dobrev, <<a href="mailto:ivailod@telera.eu">ivailod@telera.eu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
It's not directly related to your question but keep in mind that SBC <br>
should be put after vendor's/ZTE p-cscf if possible. Otherwise you will <br>
have QoS issues (if Rx is enabled/used) because of rewritten SDP from <br>
SBC/B2BUA.<br>
<br>
Regards,<br>
Ivo<br>
<br>
On 08/27/2018 08:06 AM, Mojtaba wrote:<br>
> Hello,<br>
> I am working with IMS (ZTE vendor), I want to use SBC in front of IMS<br>
> network for some security policy (Hide Topology),<br>
> I used SEMS as SBC in this regards, (like what we have in IMS/SEMS in<br>
> kamailio by Mr Carsten Bock).<br>
> When the Sebscriber want to register, The Register request received by<br>
> sems and the forward to IMS(ZTE), But the "503 Service Unavailable" is<br>
> received from IMS.<br>
> I enable "enable_reg_caching=yes" in register.sbcprofile''s<br>
> configuration file in sems.<br>
> If i use kamailio, instead of SEMS, The Registration request is done<br>
> successfully.In Kamailio i just forward the Register request to<br>
> IMS.like this:<br>
> route {<br>
> if (is_method("REGISTER")) {<br>
> $du = "sip:<a href="http://172.23.1.1:5080" rel="noreferrer noreferrer" target="_blank">172.23.1.1:5080</a>";<br>
> route(RELAY);<br>
> }<br>
> }<br>
> Let me know do the issue is from myself or from IMS(ZTE)?<br>
> In the fillowing, I paste all SIP Register signalling. First in<br>
> kamailio, second with SEMS.<br>
> ================Kamailio==================<br>
> 172.23.1.252.4080 > 172.23.1.1.5080: [bad udp cksum 0x5e58 -><br>
> 0x4193!] UDP, length 787<br>
> E../....@.]...............^XREGISTER sip:<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a> SIP/2.0<br>
> Via: SIP/2.0/UDP<br>
> 172.23.1.252:4080;branch=z9hG4bK018b.e091260b1b7395975a2ff1be0b9bec60.0<br>
> Via: SIP/2.0/UDP<br>
> 192.168.122.1:64407;branch=z9hG4bK-d8754z-7c208b9d587de818-1---d8754z-<br>
> Max-Forwards: 69<br>
> Contact: <sip:+985137054518@192.168.122.1:64407;rinstance=e664e178fc12691e;transport=UDP><br>
> From: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=5aef0541<br>
> Call-ID: ZWYxMzUzNTQzN2I2MTRiMjE2NWZjMzUzMDFmMDhkOWY.<br>
> CSeq: 1 REGISTER<br>
> Expires: 3600<br>
> Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS,<br>
> INFO, SUBSCRIBE<br>
> Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri<br>
> User-Agent: Z 3.3.25608 r25552<br>
> Allow-Events: presence, kpml<br>
> Content-Length: 0<br>
><br>
><br>
> 08:20:53.114198 IP (tos 0x0, ttl 255, id 25839, offset 0, flags<br>
> [none], proto UDP (17), length 685)<br>
> 172.23.1.1.5080 > 172.23.1.252.4080: [udp sum ok] UDP, length 657<br>
> E...d......$..............l.SIP/2.0 401 Unauthorized<br>
> Via: SIP/2.0/UDP<br>
> 172.23.1.252:4080;branch=z9hG4bK018b.e091260b1b7395975a2ff1be0b9bec60.0<br>
> Via: SIP/2.0/UDP<br>
> 192.168.122.1:64407;branch=z9hG4bK-d8754z-7c208b9d587de818-1---d8754z-<br>
> To: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=ztesipTR9m3KdZ*3-5-16648*daei.3<br>
> From: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=5aef0541<br>
> Call-ID: ZWYxMzUzNTQzN2I2MTRiMjE2NWZjMzUzMDFmMDhkOWY.<br>
> CSeq: 1 REGISTER<br>
> Content-Length: 0<br>
> WWW-Authenticate: Digest<br>
> realm="<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a>",domain="sip:<a href="http://scscf1.r-kh.com" rel="noreferrer noreferrer" target="_blank">scscf1.r-kh.com</a>",nonce="f42b36e39bdbb33b51599924b304445a",opaque="aW1zLmNvbS5jbg==",stale=TRUE,algorithm=MD5,qop="auth"<br>
><br>
><br>
> 08:20:53.120142 IP (tos 0x10, ttl 64, id 48874, offset 0, flags<br>
> [none], proto UDP (17), length 1137)<br>
> 172.23.1.252.4080 > 172.23.1.1.5080: [bad udp cksum 0x5f9a -><br>
> 0xcc62!] UDP, length 1109<br>
> E..q....@.\V.............]_.REGISTER sip:<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a> SIP/2.0<br>
> Via: SIP/2.0/UDP<br>
> 172.23.1.252:4080;branch=z9hG4bKd08b.4d2858f41d496b471c01a28e76190390.0<br>
> Via: SIP/2.0/UDP<br>
> 192.168.122.1:64407;branch=z9hG4bK-d8754z-a4d19146375d56f6-1---d8754z-<br>
> Max-Forwards: 69<br>
> Contact: <sip:+985137054518@192.168.122.1:64407;rinstance=e664e178fc12691e;transport=UDP><br>
> To: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP><br>
> From: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=5aef0541<br>
> Call-ID: ZWYxMzUzNTQzN2I2MTRiMjE2NWZjMzUzMDFmMDhkOWY.<br>
> CSeq: 2 REGISTER<br>
> Expires: 3600<br>
> Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS,<br>
> INFO, SUBSCRIBE<br>
> Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri<br>
> User-Agent: Z 3.3.25608 r25552<br>
> Authorization: Digest<br>
> username="+<a href="mailto:985137054518@r-kh.com" target="_blank" rel="noreferrer">985137054518@r-kh.com</a>",realm="<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a>",nonce="f42b36e39bdbb33b51599924b304445a",uri="sip:<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a>;transport=UDP",response="9469852a06c01efeabf3a7a5dd1a9f3b",cnonce="79d36600575648a1cc7221d8e1b5d53d",nc=00000001,qop=auth,algorithm=MD5,opaque="aW1zLmNvbS5jbg=="<br>
> Allow-Events: presence, kpml<br>
> Content-Length: 0<br>
><br>
><br>
> 08:20:53.203871 IP (tos 0x0, ttl 255, id 25842, offset 0, flags<br>
> [none], proto UDP (17), length 1118)<br>
> 172.23.1.1.5080 > 172.23.1.252.4080: [udp sum ok] UDP, length 1090<br>
> E..^d......p.............J.5SIP/2.0 200 OK<br>
> Via: SIP/2.0/UDP<br>
> 172.23.1.252:4080;branch=z9hG4bKd08b.4d2858f41d496b471c01a28e76190390.0<br>
> Via: SIP/2.0/UDP<br>
> 192.168.122.1:64407;branch=z9hG4bK-d8754z-a4d19146375d56f6-1---d8754z-<br>
> To: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=ztesipjRydzgMa*3-5-16648*daej.3<br>
> From: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=5aef0541<br>
> Call-ID: ZWYxMzUzNTQzN2I2MTRiMjE2NWZjMzUzMDFmMDhkOWY.<br>
> CSeq: 2 REGISTER<br>
> Contact: <sip:+985137054518@192.168.122.1:64407;transport=UDP;rinstance=e664e178fc12691e>;expires=1800<br>
> Contact: <sip:ZTEAGCF000f425704be720000@agcf2.r-kh.com:5079;appid=2-7;UserRegInfo=002-02-00-0b80-04-172.30.48.143;BACaddr=172.30.48.143;BACport=2944>;expires=1800;+sip.instance="<urn:uuid:172.30.35.41-000>";reg-id=1<br>
> P-Associated-URI: <tel:+985137054518><br>
> P-Associated-URI: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>><br>
> Date: Sat, 25 Aug 2018 12:25:17 GMT<br>
> Authentication-Info:<br>
> nextnonce="00cfbd64b136c12a4e27b67fd28d19fb",qop=auth,rspauth="91ca956c5eb6ee9f1934e2e770750077",cnonce="79d36600575648a1cc7221d8e1b5d53d",nc=00000001<br>
> Content-Length: 0<br>
> ============================SEMS========================<br>
> 172.23.1.252.5080 > 172.23.1.1.5080: [bad udp cksum 0x5e16 -><br>
> 0xe11e!] UDP, length 721<br>
> E...C.@.@.................^.<br>
><br>
> REGISTER sip:<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a> SIP/2.0<br>
> Via: SIP/2.0/UDP 172.23.1.252:5080;branch=z9hG4bK~0uk0ahN;rport<br>
> From: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=34384541-5B814A44000AE296-4B5F5700<br>
> To: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP><br>
> CSeq: 10 REGISTER<br>
> Call-ID: 37B52BC0-5B814A44000AE592-4B5F5700<br>
> Route: <sip:172.23.1.1:5080;lr><br>
> Max-Forwards: 70<br>
> Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS,<br>
> INFO, SUBSCRIBE<br>
> Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri<br>
> User-Agent: Z 3.3.25608 r25552<br>
> Allow-Events: presence, kpml<br>
> Contact: <sip:+985137054518@192.168.122.1:64407;rinstance=868560f8328d39e9;transport=UDP>;expires=3600<br>
> Content-Length: 0<br>
><br>
><br>
> 08:23:32.790414 IP (tos 0x0, ttl 255, id 35790, offset 0, flags<br>
> [none], proto UDP (17), length 593)<br>
> 172.23.1.1.5080 > 172.23.1.252.5080: [udp sum ok] UDP, length 565<br>
> E..Q.....................=..SIP/2.0 401 Unauthorized<br>
> Via: SIP/2.0/UDP 172.23.1.252:5080;rport=5080;branch=z9hG4bK~0uk0ahN<br>
> To: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=ztesipDEmH2AWT*3-5-16648*egei.3<br>
> From: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=34384541-5B814A44000AE296-4B5F5700<br>
> Call-ID: 37B52BC0-5B814A44000AE592-4B5F5700<br>
> CSeq: 10 REGISTER<br>
> Content-Length: 0<br>
> WWW-Authenticate: Digest<br>
> realm="<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a>",domain="sip:<a href="http://scscf1.r-kh.com" rel="noreferrer noreferrer" target="_blank">scscf1.r-kh.com</a>",nonce="179797f920a09d65b5641e5e87df0d8c",opaque="aW1zLmNvbS5jbg==",stale=TRUE,algorithm=MD5,qop="auth"<br>
><br>
><br>
> 08:23:32.855067 IP (tos 0x0, ttl 64, id 17364, offset 0, flags [DF],<br>
> proto UDP (17), length 1071)<br>
> 172.23.1.252.5080 > 172.23.1.1.5080: [bad udp cksum 0x5f58 -><br>
> 0xf553!] UDP, length 1043<br>
> E../C.@.@................._X<br>
><br>
> REGISTER sip:<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a> SIP/2.0<br>
> Via: SIP/2.0/UDP 172.23.1.252:5080;branch=z9hG4bKeAfKkaZa;rport<br>
> From: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=5A64C27D-5B814A44000CD034-4B6F6700<br>
> To: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP><br>
> CSeq: 10 REGISTER<br>
> Call-ID: 5380C97E-5B814A44000CD2A5-4B6F6700<br>
> Route: <sip:172.23.1.1:5080;lr><br>
> Max-Forwards: 70<br>
> Allow: INVITE, ACK, CANCEL, BYE, NOTIFY, REFER, MESSAGE, OPTIONS,<br>
> INFO, SUBSCRIBE<br>
> Supported: replaces, norefersub, extended-refer, timer, X-cisco-serviceuri<br>
> User-Agent: Z 3.3.25608 r25552<br>
> Authorization: Digest<br>
> username="+<a href="mailto:985137054518@r-kh.com" target="_blank" rel="noreferrer">985137054518@r-kh.com</a>",realm="<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a>",nonce="179797f920a09d65b5641e5e87df0d8c",uri="sip:<a href="http://r-kh.com" rel="noreferrer noreferrer" target="_blank">r-kh.com</a>;transport=UDP",response="017efb986e17506a82bb01e8eb136b90",cnonce="3764fd5eb2ea9539d61ec14196a2bf00",nc=00000001,qop=auth,algorithm=MD5,opaque="aW1zLmNvbS5jbg=="<br>
> Allow-Events: presence, kpml<br>
> Contact: <sip:+985137054518@192.168.122.1:64407;rinstance=868560f8328d39e9;transport=UDP>;expires=3600<br>
> Content-Length: 0<br>
><br>
><br>
> 08:23:32.860417 IP (tos 0x0, ttl 255, id 35804, offset 0, flags<br>
> [none], proto UDP (17), length 508)<br>
> 172.23.1.1.5080 > 172.23.1.252.5080: [udp sum ok] UDP, length 480<br>
> E...........................SIP/2.0 503 Service Unavailable<br>
> Via: SIP/2.0/UDP 172.23.1.252:5080;rport=5080;branch=z9hG4bKeAfKkaZa<br>
> To: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=ztesipxxsD3FR2VG8e9zxR_1dx*1-1-16648*ihad.1<br>
> From: <<a href="mailto:sip%3A%2B985137054518@r-kh.com" target="_blank" rel="noreferrer">sip:+985137054518@r-kh.com</a>;transport=UDP>;tag=5A64C27D-5B814A44000CD034-4B6F6700<br>
> Call-ID: 5380C97E-5B814A44000CD2A5-4B6F6700<br>
> CSeq: 10 REGISTER<br>
> X-ZTE-Cause: "<a href="http://CSCF-1.1.BC004016-BC004288-0-0.pcscf1.r-kh.com" rel="noreferrer noreferrer" target="_blank">CSCF-1.1.BC004016-BC004288-0-0.pcscf1.r-kh.com</a>"<br>
> Retry-After: 30<br>
> Content-Length: 0<br>
><br>
><br>
><br>
><br>
<br>
<br>
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</blockquote></div></div></div>