sr-users July 2004

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178 participants
449 discussions

RE: [Serusers] Aliasing problem
by Dave Bath 14 Jul '04

14 Jul '04

Hey Andrei, Sorry, I should have mentioned in original post - I'm using 0.8.12 -----Original Message----- From: Andrei Pelinescu-Onciul [mailto:pelinescu-onciul@fokus.fraunhofer.de] Sent: 14 July 2004 21:57 To: Dave Bath Cc: serusers(a)lists.iptel.org Subject: Re: [Serusers] Aliasing problem On Jul 14, 2004 at 20:45, Dave Bath <dave(a)fuuz.com> wrote: > Hey thanks, that did fix it. Now if I do a serctl show alias 1000 I see > Admin listed, and it's listed under the "Your Aliases" section of > serweb. I still don't understand why there wasn't an error thrown back > by serctl. Does anyone know which field from the database is needed, as > conceivably someone might have a phone number for longer than a year, > and I don't want to have to renew all the aliases... What version of ser are you using? There was a bug related to the alias expiration time, but AFAIK it was fixed long time ago. Andrei

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RE: [Serusers] route managment
by Vitaly Nikolaev 14 Jul '04

14 Jul '04

In my system I have exec that check database for aliases, check my GW for availability and return to SER right URI to send the call. It is pretty easy script on perl so far (it connect mssql server for LCR and working together with nagios to check if GW up/down/full (I know.. it is slow but so far ok for me)) I can not give u my script because it is meaningless without whole infrastructure, but can answer your questions -----Original Message----- From: serusers-bounces(a)iptel.org [mailto:serusers-bounces@lists.iptel.org] On Behalf Of Andres Sent: Wednesday, July 14, 2004 4:43 PM To: Jan Janak Cc: serusers(a)lists.iptel.org Subject: Re: [Serusers] route managment >>approach is completely impractical for a large network. Just imagine a >>network with 20 Gateways...100 Gateways... >> >> > > You can use m4 (or any other) preprocessor to generate the > configuration file. It is not the best solution but it certainly > helps. A sample file for m4 can be found in sip_router/etc/rules.m4, > sample config file using this approach is in > sip_router/etc/ser.cfg.m4 (in unstable cvs branch). > > Jan. > > Hi Jan, Maybe I am missing something here but I thought ser.cfg had a limit of 20 route blocks. Even if we use m4 wouldn't we have this limit? If so then how can we implement 100 gateway routes elegantly in their own route block? Must we stuff 5 per route block or all in one huge PSTN route block? Thanks, -- Andres Network Admin http://www.telesip.net _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers

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[Serusers] Aliasing problem
by Dave Bath 14 Jul '04

14 Jul '04

Hey Ezequiel, Many thanks for the quick response! Yeah, sorry, I should have mentioned I already have persistent storage for the user tables - they're all stored using mode2, I was just checking with all the references to "aliases stored in cache" that they were actually written to the db as well. Could you explain what the FOREVER_REL value is? Why would the value be too high? Too large a number of the type of storage in the mysql table? Also, does anyone know why the serctl script says the alias was added, but it doesn't seem to have been..? Many thanks again everyone, D ________________________________ From: Ezequiel Colombo [mailto:ecolombo@arcotel.net] Sent: 14 July 2004 19:54 To: Dave Bath; serusers(a)lists.iptel.org Subject: Re: [Serusers] Aliasing problem Dave, you must turn no the persistent storage of the usrloc table. After this the contacts added in the memory table can be dumped to mysql. You can also check in the script serctl if the value of the variable FOREVER_REL is appropiate or is too high for your mysql aliases table and cause the INSERT to fail. In my network i have reduced this value to FOREVER_REL=31536000 (one year). ... FROM README FILE OF USRLOC MODULE ... 1.3.10. db_mode (integer) The usrloc module can utilize database for persistent contact storage. If you use database, your contacts will survive machine restarts or sw crashes. The disadvantage is that accessing database can be very time consuming. Therefore, usrloc module implements three database accessing modes: * 0 - This disables database completely. Only memory will be used. Contacts will not survive restart. Use this value if you need a really fast usrloc and contact persistence is not necessarry or is provided by other means. * 1 - Write-Through scheme. All changes to usrloc are immediately reflected in database too. This is very slow, but very reliable. Use this scheme if speed is not your priority but need to make sure that no registered contacts will be lost during crash or reboot. * 2 - Write-Back scheme. This is a combination of previous two schemes. All changes are made to memory and database synchronization is done in the timer. The timer deletes all expired contacts and flushes all modified or new contacts to database. Use this scheme if you encounter high-load peaks and want them to process as fast as possible. The mode will not help at all if the load is high all the time. Also, latency of this mode is much lower than latency of mode 1, but slightly higher than latency of mode 0. Warning In case of crash or restart contacts that are in memory only and haven't been flushed yet will get lost. If you want minimize the risk, use shorter timer interval. Default value is 0. Example 1-10. Set db_mode parameter ... modparam("usrloc", "db_mode", 2) ... ----- Original Message ----- From: Dave Bath <mailto:dave@fuuz.com> To: serusers(a)lists.iptel.org Sent: Wednesday, July 14, 2004 3:40 PM Subject: [Serusers] Aliasing problem Hey guys, I have been playing with SER for a few days now, and apart from having to rebuild all the RPMs to get it working on FC1 with mysql4 (mysql4 is apparently not officially supported in FC1 ?!) everything was smooth and dandy. Really enjoying using such a powerful and flexible product. However, I have one problem, and I've done my best to trawl all the groups and lists, and debug it myself and I cannot work out what is going on - perhaps I just don't understand how it works properly. I am trying to set numerical aliases so that incoming routing can be handled more easily by a PSTN gateway. I am trying the command: Serctl alias add 1000 sip:admin@<sipserver> I get a reply that the alias has been added (once a previous message on this list pointed out that I needed to add lookup("aliases"); to ser.cfg)! The problem is the mysql table is still empty - although serctl says that the alias has been added, it doesn't seem to have been. When I try and call "1000" I get a 404 not found, but calling "admin" works fine. Does anyone have any ideas?! Also, on a slight side note, I was assuming that the aliases are reboot-safe... they're stored in the database and will get reloaded if ser is rebooted. Is this the case by default or does an option need to be enabled? Sorry for the long post. Many thanks to everyone who has worked on this, and it would be fantastic to get this last bit sorted out. Cheers, Dave Inmarsat Ltd Global Satellite Communications Regional BGAN Engineer ________________________________ _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers

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[Serusers] Still having problems with Radius Accounting
by Rafael J. Risco G.V. 14 Jul '04

14 Jul '04

hello IŽm still having problems (since two months ago) to obtain radius accounting, the authentication process works well and the calls are completed but I did not see any "Accounting Report" in /var/log/radius/radacct/ or neither in radiusd -X debug and now IŽve just seen this error after ACK message in the debug file: " ERROR: acc_rad_request: radius-ing failed " . . . 8(7957) ERROR: acc_rad_request: radius-ing failed 8(7957) DEBUG: cleanup_uacs: RETR/FR timers reset 8(7957) DEBUG: add_to_tail_of_timer[2]: 0x402f59b8 8(7957) receive_msg: cleaning up 5(7954) ERROR: acc_rad_request: radius-ing failed 5(7954) SER: forwarding ACK statelessly 5(7954) DEBUG: mk_proxy: doing DNS lookup... 5(7954) check_via_address(10.0.0.236, 10.0.0.236, 0) 5(7954) Sending: ACK sip:6604000@200.110.6.58 SIP/2.0 Record-Route: <sip:6604000@200.110.2.132;ftag=5c0013eda4;lr=on> Via: SIP/2.0/UDP 200.110.2.132;branch=0 Via: SIP/2.0/UDP 10.0.0.236:5060;branch=z9hG4bK5c0013eda465 From: <sip:6603000@200.110.2.132>;tag=5c0013eda4 To: <sip:6604000@200.110.2.132>;tag=ac407c95a4 Call-ID: 5cc06e00-b11a-13ae-80ed-0002a40055b2(a)10.0.0.236 CSeq: 65 ACK Content-Length: 0 Max-Forwards: 69 . . . I have noticed that this error appears only when I try "setflag(1)" for the transactions I want to account, also in this case the ACK message it comes too late (not when pick Up the phone...). these are some details of my installation: - SuSE Linux 9.0 (i586) - ser-0.8.12 - I have followed "radius-how-to" very carefully. - radiusclient-0.3.2 - freeradius-0.9.3 (installed in the same host with ser and receiving accounting from other NAS) - I am not using mysql (I will use it with radius integration). - my current ser.cfg and endpoints configuration are shown below: another question: Is it possible to have "per-call authentication" with this radius module? I am new in SIP protocol and ser services so please I need someone share its ser.config file to make this works. thanks. Rafael Risco Gonzale-Vigil Millicom Peru SA Lima - Peru ser1.cfg # # $Id: ser.cfg,v 1.21.4.1 2003/11/10 15:35:15 andrei Exp $ # ----------- global configuration parameters ------------------------ # debug=3 # debug level (cmd line: -dddddddddd) # fork=yes # log_stderror=no # (cmd line: -E) #/* Uncomment these lines to enter debugging mode debug=6 fork=yes log_stderror=yes #*/ check_via=no # (cmd. line: -v) dns=no # (cmd. line: -r) rev_dns=no # (cmd. line: -R) port=5060 children=4 fifo="/tmp/ser_fifo" # ------------------ module loading ---------------------------------- # Uncomment this if you want to use SQL database #loadmodule "/usr/local/lib/ser/modules/mysql.so" loadmodule "/usr/local/lib/ser/modules/sl.so" loadmodule "/usr/local/lib/ser/modules/tm.so" loadmodule "/usr/local/lib/ser/modules/rr.so" loadmodule "/usr/local/lib/ser/modules/maxfwd.so" loadmodule "/usr/local/lib/ser/modules/usrloc.so" loadmodule "/usr/local/lib/ser/modules/registrar.so" # loadmodule "/usr/local/lib/ser/modules/uri.so" # loadmodule "/usr/local/lib/ser/modules/uri_radius.so" # Uncomment this if you want digest authentication # mysql.so must be loaded ! loadmodule "/usr/local/lib/ser/modules/auth.so" # loadmodule "/usr/local/lib/ser/modules/auth_db.so" loadmodule "/usr/local/lib/ser/modules/auth_radius.so" loadmodule "/usr/local/lib/ser/modules/group_radius.so" loadmodule "/usr/local/lib/ser/modules/acc.so" # load the NAT Helper Module # loadmodule "/usr/local/lib/ser/modules/nathelper.so" # ----------------- setting module-specific parameters --------------- # -- usrloc params -- # modparam("usrloc", "db_mode", 0) # Uncomment this if you want to use SQL database # for persistent storage and comment the previous line # modparam("usrloc", "db_mode", 2) # -- auth params -- # Uncomment if you are using auth module # # modparam("auth_db", "calculate_ha1", yes) # # If you set "calculate_ha1" parameter to yes (which true in this config), # uncomment also the following parameter) # # 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) modparam("acc","log_level",1) modparam("auth_radius","radius_config","/usr/local/etc/radiusclient/radiusclient.conf") modparam("auth_radius","service_type",15) modparam("acc","radius_config","/usr/local/etc/radiusclient/radiusclient.conf") modparam("acc", "service_type", 15) modparam("acc", "radius_flag", 1) modparam("acc", "radius_missed_flag", 3) # ------------------------- request routing logic ------------------- # main routing logic route{ setflag(1); if (method=="REGISTER") log(1, "REGISTER message received\n"); if (method=="INVITE") log(1, "INVITE message received\n"); if (method=="ACK") log(1, "ACK message received\n"); if (method=="BYE") log(1, "BYE message received\n"); if (method=="CANCEL") log(1, "CANCEL message received\n"); if (method=="SUBSCRIBE") log(1, "SUBSCRIBE message received\n"); if (method=="NOTIFY") log(1, "NOTIFY message received\n"); if (method=="OPTIONS") log(1, "OPTIONS message received\n"); if (method=="INFO") log(1, "INFO message received\n"); if (method=="MESSAGE") log(1, "MESSAGE message received\n"); if (method=="REFER") log(1, "REFER message received\n"); /* if (method =="INVITE" | method == "BYE"){ log(1,"INVITE or BYE\n"); setflag(1); }; if (method=="MESSAGE") { log(1,"MESSAGE\n"); setflag(1); }; if (method=="BYE"){ log (1, "BYEd or CANCEL\n"); setflag(1); }; if (method=="CANCEL"){ log (1, "BYEe or CANCEL\n"); setflag(1); }; */ # 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; }; # 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; }; # 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==myself) { if (method=="REGISTER") { # Uncomment this if you want to use digest authentication if (!radius_www_authorize("")) { www_challenge("", "0"); break; }; save("location"); break; }; # native SIP destinations are handled using our USRLOC DB if (!lookup("location")) { sl_send_reply("404", "Not Found"); break; }; }; # 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(); }; } ######################################################################## Example of one endpoint config: VoiceFinder Gateway Series (http://www.addpac.com) AP200B System software Revision 8.10 ! ! VoIP configuration. ! ! ! Voice service voip configuration. ! voice service voip fax protocol t38 redundancy 0 fax rate 9600 h323 call start fast no force-starth245 busyout monitor gatekeeper busyout monitor voip-interface display send e164 ! ! ! Voice port configuration. ! voice-port 0/0 ! FXS caller-id enable ! ! voice-port 0/1 ! FXS caller-id enable ! ! ! ! ! Pots peer configuration. ! dial-peer voice 0 pots destination-pattern 6600020 port 0/0 call-waiting ! dial-peer voice 1 pots destination-pattern 6603000 port 0/1 call-waiting ! ! ! ! Voip peer configuration. ! ! dial-peer voice 1002 voip destination-pattern 6604000 session target sip-server session protocol sip codec g7231r63 dtmf-relay rtp-2833 ! ! ! ! SIP UA configuration. ! sip-ua user-register sip-username 660300X sip-password 1234 sip-server 200.X.2.132 register e164 ! ! ! MGCP configuration. ! mgcp codec g711ulaw ! ! ! Tones ! ! voip-interface ether0.0 ! agent00 #

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[Serusers] asterisk as a SUA together with SER
by Cyprien Simons 14 Jul '04

14 Jul '04

Hi, I'm trying to use Asterisk as a SUA which would allow me to register on a SER running on the same machine and to send simple test messages through the CLI to another SUA located on another computer, registered on a SER running also on this other computer. I need the CLI because I have to work remotely. Is Asterisk the good choice in your opinion? Thanks a lot for any help. Cyprien

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[Serusers] Loose Routing / Record-Route/Route Qeustions
by Arnd Vehling 14 Jul '04

14 Jul '04

Hello, i am currently trying to understand what exactly "loose routing" is and what exactly "loose_route" does. According to the admin manual and several postings from iptel.org members on this this piece of code should be at the very top of every routing script right after the sanity checks: # subsequent messages within a dialog should take the # path determined by record-routing if ( loose_route() ) { t_relay(); break; }; AFAIK a proxy determines if a request should be "loose routed" by looking at the "Record-Route"/"lr=on" option. Questions: If i have this statement bevore any authentication checks, dont i risk to have an open relay? Its easy to append a "lr=on" to every request. When exactly is "loose_route == TRUE" I cant find any real info about this either in the admin doc, nor in the according modules README file. I did understood what "Record-Route:" does, but what does "Route:" do i.e. wheres the difference between both?! Does every "subsequent" message belonging to a (statefull) sip call get evaluatet in SERs main route block? (As long as its record-routed off course and the proxy "sees" it). best regards, Arnd

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[Serusers] 2nd Instance of SER for SEMS startup
by Steve Blair 14 Jul '04

14 Jul '04

Hello: I have a second instance of SER running on the same box as the first instance. The first instance is our proxy server the second exists only to integrate SEMS with the failure_route block. It seems that each instance of SER and possibly SEMS too must be started in a specific sequence. Has anyone looked into this? What I'm seeing is that if the 2nd instance of SER is started first then administrators using serctl experience problems accessing certain functions. Specifically I am seeing a 'ul_dump' does not exist error when issuing the serctl ul show command. If I start the 1st instance (proxy) of SER first I do not get this error. Thinking this was due to missing loadmodules in the 2nd config file I copied the loadmodule statements from the 1st config file to the 2nd. I no longer have issues with serctl regardless of the startup sequence but now calls that use to fail over to SEMS are getting a fast busy. Am I missing something about the startup sequence of 2 instances of SER ? Thanks,Steve -- ISC Network Engineering The University of Pennsylvania 3401 Walnut Street, Suite 221A Philadelphia, PA 19104 voice: 215-573-8396 215-746-7903 fax: 215-898-9348 sip:blairs@upenn.edu

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[Serusers] architecture of ser
by varala ramakanth 14 Jul '04

14 Jul '04

hello friends, i just want to know the basic architecture of the ser in ascii diagram how does this maintain registar ,redirect ,location and the proxy servers. as for as my undestanding i thought redirect+registar+location | | ua--> proxy--|-------->ua does this is correct please guide me with regards rama kanth __________________________________ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail

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[Serusers] Newer VOIP devices ?
by Bill 14 Jul '04

14 Jul '04

Is anyone familar with the newer VOIP devices that sit outside the LAN between the cable/DSL modem and the firewall/NAT router? I understand AT&T is using something like this but what they use has a device like a Cisco 186 and a router built into one for under $100. Basically, it's a SIP friendly router with POTS ports. Vonage has something like this mentioned on their web site as well. This allows them to offer SIP/VOIP services quickly without having to battle the NAT problems. Anyone using such an animal? Bill Dunn

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RES: [Serusers] problem with desc_time_order parameter?
by Jimes Vasco Milanez 14 Jul '04

14 Jul '04

Hi Jan > On 16-06 16:53, Jimes Vasco Milanez wrote: > > Hi all > > > > I noticed that the desc_time_order parameter of the > registrar module (in ser.cfg) doesn't seem to work as it > should (according to the description in the registrar manual). > > If I understood correctly, if desc_time_order = 1 (using > modparam) the newest contact should be used among those of > same priority (I'm using the append_branches parameter equal to 0). > > What exactly does not work, could you give me an example ? not the newest contact is used for calling in the case of logging on from two softphones. In the tests that I've performed, if I log from two softphones (We are using X-Lite) not necessarily the calls arrive to that latest logged in. (using the configuration mentioned above) > > Another doubt is whether it is possible or not to use > append_branches=1 to do priority-driven forking (all contacts > are receiving the request, no matter which is their priority; > is it possible to limit the forking just to those of same > priority (q)? or even something better? :-) ) > > No. thanks! Jimes

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sr-users July 2004