Re: [Serusers] failure route and ERROR: t_should_relay: status rewrite by UAS: stored: 408, received: 487

Jim, I've been catching up to where you have already been with respect to failure route and the single global fr_inv_timer. It just doesn't work if the same SER is fielding invites for those having voicemail and those not. Before I go ahead and add a Wait 20 to my Asterisk voicemail, I had one other idea I wanted to ask about: What if I run two ser instances? The main one checks is_user_in("Request-URI", "voicemail") and then punts any Invites for that user to a second ser which implements the fr_inv_timer, t_on_failure, etc. transfer to voicemail. Meanwhile all the non-voicemail subscribers (including stuff sent to our PSTN gateway, etc.) continues to chug along without the timer stuff happening. Does this sound like a reasonable approach? /a Jim Burwell wrote: > I've found that the whole system works better when you don't use > failure_route() to do "time out" style voicemail. > I have a test setup where I just add a call to Asterisk immediately > if the user is registered (has location entry) with a special prefix > that gets matched in the * extensions.conf file, and causes * to > simply wait for X seconds before answering. If the calee phone(s) is > answered, SER cancels the call to * and any other phones registered > to the user. If no phones are answered, * answers and sends the call > to voicemail. > > For whatever reason, this approach seems more stable so far, and > seems more compatible with more phones, etc, than the failure_route > approach. For instance, if you have a locations entry that points a > user to another user, or more than one user (e.g. mainline(a)domain.com > -> receptionist(a)domain.com -> receptionist@<phone-IP:port>), SER > seems to get confused and sends a CANCEL to the voicemail system > you've just triggered the INVITE to in your failure_route. When > doing it the other way, it doesn't seem to have this problem. > As for mapping user names to numeric extensions in Asterisk, I wrote > an AGI script which does this by reverse-mapping the username to > aliases in the SER script. It requires that your users have > numerical extensions assigned in the SER aliases database (e.g. 1234 > -> joe(a)domain.com). If there are multiple #s mapped to the user, it > just returns the lowest one. Not sure if I can give this out though, > since I wrote it for a client. > > - Jim > > > Alan Crosswell wrote: > >> I'm trying to do failure route to voicemail (which is working) but >> this error is logged: >> >> ERROR: t_should_relay: status rewrite by UAS: stored: 408, received: >> 487 >> >> I googled this and see that this came up last in October >> (http://lists.iptel.org/pipermail/serusers/2003-October/002921.html) >> but I don't see any evidence of a solution in the thread. >> >> I suspect mine is the same problem as I have two UAs registered so >> the initial dset is two places and then the append_branch on timeout >> is just the voicemail uri. >> >> BTW, I am doing this with asterisk for the usual DTMF access reasons >> (altough I haven't yet figured out how to map sip:alan@columbia.edu >> to DTMF. Maybe I'll have to give up and do numeric mailboxes:-( >> I am rewriting with a prefix of "vm*u" before punting over to >> asterisk which has >> exten => _vm*u.,1,Wait,1 >> exten => _vm*u.,2,Voicemail(${EXTEN:3}) exten => _vm*u.,3,Goto(#,1) >> >> Any pointers would be appreciated. My not-yet-complete ser.cfg is >> attached (not yet punting voicemail for unregistered subscribers; >> just registered subscribers who time out the invite). >> >> /a >> >> ------------------------------------------------------------------------ >> >> >> # >> # $Id: ser.cfg,v 1.21.2.1 2003/07/30 16:46:18 andrei Exp $ >> # >> # simple quick-start config script >> # >> >> # ----------- global configuration parameters ------------------------ >> >> debug=2 # debug level (cmd line: -dddddddddd) >> fork=yes >> log_stderror=no # (cmd line: -E) >> #listen=128.59.39.127 >> >> check_via=yes # (cmd. line: -v) >> dns=no # (cmd. line: -r) >> rev_dns=no # (cmd. line: -R) >> port=5060 >> children=4 >> fifo="/tmp/ser_fifo" >> alias="columbia.edu" >> # ------------------ module loading ---------------------------------- >> >> # Uncomment this if you want to use SQL database >> loadmodule "/usr/lib/ser/modules/mysql.so" >> loadmodule "/usr/lib/ser/modules/acc.so" >> loadmodule "/usr/lib/ser/modules/sl.so" >> loadmodule "/usr/lib/ser/modules/tm.so" >> loadmodule "/usr/lib/ser/modules/rr.so" >> loadmodule "/usr/lib/ser/modules/maxfwd.so" >> loadmodule "/usr/lib/ser/modules/usrloc.so" >> loadmodule "/usr/lib/ser/modules/registrar.so" >> >> # Uncomment this if you want digest authentication >> # mysql.so must be loaded ! >> loadmodule "/usr/lib/ser/modules/auth.so" >> loadmodule "/usr/lib/ser/modules/auth_db.so" >> >> loadmodule "/usr/lib/ser/modules/exec.so" >> >> # ----------------- setting module-specific parameters --------------- >> # -- transaction timers -- >> modparam("tm", "fr_inv_timer", 15 ) >> modparam("tm", "fr_timer", 10 ) >> >> # -- usrloc params -- >> # >> modparam("usrloc", "db_mode", 2) >> modparam("usrloc", "timer_interval", 10) >> >> # -- auth params -- >> modparam("auth_db", "calculate_ha1", yes) >> modparam("auth_db", "password_column", "password") >> >> # -- rr params -- >> # add value to ;lr param to make some broken UAs happy >> modparam("rr", "enable_full_lr", 1) >> >> # -- acc params -- >> modparam("acc", "log_level", 1) >> modparam("acc", "log_flag", 1 ) >> modparam("acc", "log_missed_flag", 2) >> # ------------------------- request routing logic ------------------- >> >> # main routing logic >> >> route{ >> >> /* ********* ROUTINE CHECKS >> ********************************** */ >> # initial sanity checks -- messages with >> # max_forwards==0, or excessively long requests >> if (!mf_process_maxfwd_header("10")) { >> sl_send_reply("483","Too Many Hops"); >> break; >> }; >> if (msg:len > max_len ) { >> sl_send_reply("513", "Message too big"); >> break; >> }; >> >> lookup("aliases"); >> >> # we record-route all messages -- to make sure that >> # subsequent messages will go through our proxy; that's >> # particularly good if upstream and downstream entities >> # use different transport protocol >> record_route(); >> >> # loose-route processing >> if (loose_route()) { >> t_relay(); >> break; >> }; >> >> setflag(2); >> >> # if the request is for other domain use UsrLoc >> # (in case, it does not work, use the following command >> # with proper names and addresses in it) >> if (uri=~"^sip:(.+@)?columbia.edu") { >> >> if (method=="REGISTER") { >> log(1, "REGISTER received\n"); >> if (!www_authorize("columbia.edu", "subscriber")) { >> www_challenge("columbia.edu", "0"); >> break; >> }; >> >> save("location"); >> break; >> }; >> >> /* ********** Dial out to PSTN logic ************* */ >> >> # 5 Digit dialing, interior calls >> if (uri=~"^si"^sip:[1347][0-9]{4}@columbia\.edu") { >> rewritehostport("128.59.59.242:5060"); >> log(1,"5 digit expression match"); >> route(2); >> break; >> }; >> >> >> # 10 Digit dialing with outlide line >> if (uri=~"^si"^sip:931[0-9]{10}@columbia\.edu") { >> if(!(src_ip=="128.59.59.242") & >> !(proxy_authorize("columbia.edu","subscriber"))) { >> proxy_challenge("columbia.edu", "1"); >> break; >> >> } else { >> rewritehostport("128.59.59.242:5060"); >> log(1," 93 Outside line with 10 digit >> expression match"); >> route(2); >> break; >> }; >> }; >> >> /* voicemail access */ >> if (uri=~"^sip:\*86@columbia\.edu" >> |uri=~"^sip:vm@columbia\.edu" >> |uri=~"^sip:voicemail@columbia\.edu") { >> route(3); >> break; >> }; >> >> # native SIP destinations are handled using our USRLOC DB >> if (!lookup("location")) { >> if (!exec_dset("/etc/ser/sipldap")) { >> sl_send_reply("404", "Not Found"); >> break; >> } else { >> log(1," sipldap call"); >> }; >> }; #!lookup >> >> }; >> if (method == "INVITE") { >> t_on_failure("1"); >> }; >> # forward to current uri now; use stateful forwarding; that >> # works reliably even if we forward from TCP to UDP >> if (!t_relay()) { >> sl_reply_error(); >> }; >> } >> >> route[2] { log(1,"route[2]:SIP-to-PSTN call routed"); >> if (!t_relay()) { >> sl_reply_error(); >> }; >> } >> # ---- voicemail user access ---- >> route[3] { >> rewritehostport("127.0.0.1:5069"); >> log(1,"voicemail access"); >> if (!t_relay()) { >> sl_reply_error(); >> }; >> } >> # ------------- handling of unregistered user ------------------ >> route[4] { >> >> log(1,"route[4]: user not registered"); >> # non-Voip -- just send "off-line" >> if (!(method == "INVITE" || method == "ACK" || method == >> "CANCEL")) { >> sl_send_reply("404", "Not Found"); >> break; >> }; >> >> # not voicemail subscriber >> # if (!isflagset(4)) { # sl_send_reply("404", >> "Not Found and no voicemail turned on"); >> # break; >> # }; >> >> # forward to voicemail now >> prefix("vm*u"); >> rewritehostport("127.0.0.1:5069"); >> t_relay_to_udp("127.0.0.1", "5069"); >> } >> failure_route[1] { >> # transfer to asterisk voicemail with uMAILBOX for unavailable. >> # sip:USER@columbia.edu -> sip:vm*uUSER@127.0.0.1:5069 >> t_on_failure("2"); >> prefix("vm*u"); >> rewritehostport("127.0.0.1:5069"); >> append_branch(); >> log(1,"redirection to voicemail\n"); >> t_relay(); >> } >> >> failure_route[2] { >> # forwarding failed (voicemail down?) >> log(1,"voicemail failed\n"); >> t_reply("500","Weasels have eaten voicemail again"); >> } >> >> >> >> >> ------------------------------------------------------------------------ >> >> >> _______________________________________________ >> Serusers mailing list >> serusers(a)lists.iptel.org >> http://lists.iptel.org/mailman/listinfo/serusers >> >> > > -- > +---------------------------------------------------------------------------+ > > | Jim Burwell - Sr. Systems/Network/Security Engineer, > JSBC | > +---------------------------------------------------------------------------+ > > | "I never let my schooling get in the way of my education." - Mark > Twain | > | "UNIX was never designed to keep people from doing stupid things, > because | > | that policy would also keep them from doing clever things." - Doug > Gwyn | > | "Cool is only three letters away from Fool" - Mike Muir, > Suicyco | > | "..Government in its best state is but a necessary evil; in its > worst | > | state an intolerable one.." - Thomas Paine, "Common Sense" > (1776) | > +---------------------------------------------------------------------------+ > > | Email: jimb(a)jsbc.cc ICQ UIN: > 1695089 | > +---------------------------------------------------------------------------+ > > | Reply problems ? 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