<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>A IOS Gateway is given that connects through a E1 ISDN PRI to a Nortel PBX, The router acting as network side. (primary-net5)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Calls are coming in through a SIP trunk from two different CUCM clusters (both being trunked to a central CUCM cluster that only acts as a call router).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Call setup works in both cases, SIP messages seem identical (through debug ccsip messages)<o:p></o:p></p><p class=MsoNormal>However, once the call is established, on calls coming from “SITE A”, a FACILITY message is sent towards the PBX, with no information element. Because of this the PBX throws an error and the gateway disconnects:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Jan 28 12:55:44.291 UTC: //478350/9DBBB8800000/CCAPI/cc_api_call_facility:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> Interface=0x311D76B8, Call Id=478350<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Jan 28 12:55:44.291 UTC: //478351/9DBBB8800000/CCAPI/ccCallFacility:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> Call Id=478351<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Jan 28 12:55:44.291 UTC: ISDN Se0/0/0:15 Q931: TX -> FACILITY pd = 8 callref = 0x0423<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Jan 28 12:55:44.311 UTC: ISDN Se0/0/0:15 Q931: RX <- STATUS pd = 8 callref = 0x8423 <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> Cause i = 0x81E0 - Mandatory information element missing <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> Call State i = 0x0A<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Jan 28 12:55:44.311 UTC: ISDN Se0/0/0:15 Q931: TX -> DISCONNECT pd = 8 callref = 0x0423 <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> Cause i = 0x82E0 - Mandatory information element missing<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Jan 28 12:55:44.355 UTC: ISDN Se0/0/0:15 Q931: RX <- RELEASE pd = 8 callref = 0x8423<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>Jan 28 12:55:44.355 UTC: ISDN Se0/0/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x0423<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Calls from “SITE B” never generate this facility message so the call works as expected.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I tried to block forwarding of facility messages altogether on the PRI, but it doesn’t seem to make any difference (not even after restarting the serial interface):<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>interface Serial0/0/0:15<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> description VOICE|E1 PRI towards local Nortel PBX<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> no ip address<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> encapsulation hdlc<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> isdn switch-type primary-net5<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> isdn protocol-emulate network<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> isdn incoming-voice voice<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'> no isdn outgoing ie facility <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>no cdp enable<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New"'>!<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Any clues as to what triggers the facility manager in the CUCM setup and/or how can I block this on the gateway?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-family:"Arial","sans-serif";color:#0F245F'>Zoltan Kelemen</span></b><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#0F245F'><br></span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#666666'>Emerson</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>