serfaq.sgml

用来作为linux中SIP SERVER,完成VOIP网络电话中服务器的功能

			Yes, see acc module.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			What tool can I use to capture &sip; traffic ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			<ulink url="http://ngrep.sourceforge.net">ngrep</ulink>, <ulink
			    url="http://www.ethereal.com">ethereal</ulink>, <ulink
			    url="http:/www.tcpdump.org">tcpdump</ulink>.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Is there ENUM support in &ser; ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			Yes, see enum module.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Do you have any experience (or know) where I can get some info on setting up
			an ENUM testbed with <acronym>DNS</acronym> and Linux?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			if by testbed you mean running your own e164.arpa root, then you simply
			make your dns server a root for e164.arpa domain by adding line
		    </simpara>
		    <programlisting format="linespecific">
primary         e164.arpa               e164.arpa.db
</programlisting>
		    <simpara>
			into your named.boot file and then by populating file e164.arpa.db with
			your enum entries.  Below is an example.
		    </simpara>
		    <programlisting format="linespecific">
$ORIGIN .
$TTL 0  ; 0 seconds
e164.arpa               IN SOA  foo.fi. hostmaster.foo.fi. (
                                200204681  ; serial
				28800      ; refresh (8 hours)
				7200       ; retry (2 hours)
				604800     ; expire (1 week)
				86400      ; minimum (1 day)
			)
		        NS      foo.fi.
$ORIGIN e164.arpa.
$ORIGIN 8.5.3.e164.arpa.
$ORIGIN 9.3.8.1.5.6.2.8.5.3.e164.arpa.
3.1   NAPTR   1 1 <quote>u</quote> <quote>E2U+sip</quote> <quote>!(^.*$)!sip:[e-mail]!i</quote> .
</programlisting>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Will &ser; support <acronym>STUN</acronym> in the future?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			<acronym>STUN</acronym> is a protocol operated separately from &ser;
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Is there any way to show active calls (dialed number, duration, originating
			<acronym>IP</acronym>...) with &ser;?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			No, ser is not call stateful.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			If I'm working with &rfc2543; compliant phones (such as
			<acronym>ATA</acronym>) may I use loose routing?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			Yes, loose routing is backwards compatible.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			How can I configure radiator for digest authentication?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			In case of radiator, you don't need to do anything special in the
			configuration.  Just install the latest radiator and then make sure your
			config can handle the service-types you have configured ser to use. For
			example, you can have
		    </simpara>
		    <programlisting format="linespecific">
&lt;Handler Service-Type=SIP&gt;
...
&lt;/AuthBy&gt;
</programlisting>
		    <simpara>
			Or whatever your strategy is.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			How can I configure radiator for digest authentication?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			see freeradius-0.8.1/doc/rlm_digest
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Trying to create alias, I am getting the following message:
		    </simpara>
		    <simpara>
			<quote>400 Table 'aliases' Not Found</quote>
		    </simpara>
		</question>
		<answer>
		    <simpara>
			You must have lookup(<quote>aliases</quote>) somewhere in your script.
		    </simpara>
		</answer>
	    </qandaentry>

	    <qandaentry>
		<question>
		    <simpara>
			Also how much shared memory does &ser; allocate by default?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			32 Mb.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			How can I identify what ser doesn't like about the config file?
		    </simpara>
		</question>
		<answer>
		    <programlisting format="linespecific">
0(612) parse error (81,1-10): syntax error
0(612) parse error (91,1-6):
                    ^^^^^^
</programlisting>
		    <simpara>
			These are the line number and the characters. So look in line 81 and 91 of
			your config file for errors.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <programlisting format="linespecific">
Warning: 392 216.87.144.203:5060 "Noisy feedback tells:  pid=19604
req_src_ip=216.87.144.205 req_src_port=5065 in_uri=sip:addaline.com
out_uri=sip:addaline.com via_cnt==1".
</programlisting>
		    <simpara>
			I want to get rid of these?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			Use sip_warning=no
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Is &ser; a gatekeeper ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			No, &ser; is a &sip; proxy.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Is there an example of the session timer with &ser; somewhere?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			That's a theoretical &sip; option today, &ser; is not supporting
			session-timer.  We gave it a try more than one year ago and gave up due to
			interop problems.  The specification was developing at that time so quickly
			that there was not any UA which would work with another one correctly.
		    </simpara>
		    <simpara>
			Once the interoperability gets better, it could be worth implementing. It is
			in general a nice mechanism for avoiding session state silo in network,
			which is good for scalability.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Could someone point me where I can read about this www_authorize()
		    </simpara>
		</question>
		<answer>
		    <simpara>
			The documentation is in sip_router/modules/auth_db/doc
		    </simpara>
		    <simpara>
			The function tries to verify user's credentials. It returns 1 if they are
			correct and -1 if not.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			I'm new to &ser; and would like to set up a test lab with a couple different
			ip phones / adapters to learn from. Could someone recommend a few devices
			that we could use for that purpose?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			Hardphones: Grandstream, Cisco, ATA, Mitel, Pingtel, Snom
		    </simpara>
		    <simpara>
			Softphones: kphone, Xten, Windows Messenger, Hotsip client.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			how can i configure my ser for multiple domains?
			For example [e-mail] and [e-mail] on the same server?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			If you are using 0.8.10, it is a manual process--copy and paste
			<acronym>SQL</acronym> tables, have a table set for each served domain, and
			refer to the table names from your scripts. E.g.,
		    </simpara>
		    <simpara>
			if (uri=~"domain1.com") { lookup("domain1"); ...
		    </simpara>
		    <simpara>
			With 0.8.11 you can automate the process quite a lot. Authorization
			functions with realm set to empty value take domain name from &sip;
			requests. User location database keeps track of domains as well. The
			<quote>domain</quote> modules allows you to keep track of maintained domains
			in a way which does not take changing scripts.
		    </simpara>
		    <simpara>
			It is possible there are some magic options in domain/usrloc/auth_db/
			registrar/auth modules you need to turn on to enable multidomain
			operation--I don't remember these by heart, hopefuly some people
			on the mailing list do.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			I am testing &ser; version 0.8.11pre29 with two <acronym>MSN</acronym>
			Messenger(v4.6) clients. I tried to send the following MESSAGE through &ser;
			with record-route header added by &ser;. However, the receiving
			<acronym>MSN</acronym> client responded with a 400 Bad Request for that
			message.
		    </simpara>
		</question>
		<answer>
		    <simpara>
			It's <acronym>MSN</acronym> Messenger's bug--lr parameter is not
			recognized as specified in &rfc3261;. Use
		    </simpara>
		    <simpara>
			modparam(<quote>rr</quote>, <quote>enable_full_lr</quote>, 1)
		    </simpara>
		    <simpara>
			in ser config file to make it working.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			I have got an H.323 Mediatrix <acronym>FXO</acronym> gateway. It is not &sip;
			based. May I use it with &ser; ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			No.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			It is possible to process the voicemail request on the same instance I use to
			forward/register users ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			Yes.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			How can I checkout the sources from the <acronym>CVS</acronym> ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			FIXME.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			Are there any binary packages available ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			FIXME.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			What is symmetric signaling ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			FIXME.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			What is &sip;, <acronym>SIMPLE</acronym>, &sdp;, Proxy, Registrar, Redirect server ?
		    </simpara>
		</question>
		<answer>
		    <simpara>
			FIXME.
		    </simpara>
		</answer>
	    </qandaentry>
	    <qandaentry>
		<question>
		    <simpara>
			&ser; starts normally with the default <filename>ser.cfg</filename>. When I
			uncommented the line load module
			<quote>/usr/local/lib/ser/modules/mysql.so</quote> to load mysql.so,
			everything seems normally. But actually, ser stops abnormally.
		    </simpara>
		</question>
		<answer>
		    <simpara>
			mysql module is excluded from compilation/installation by default
			(dependencies issue). You can compile it separately with: make modules
			modules=modules/mysql. Also, you can add it in the list of the default
			compiled modules with: make all include_modules=<quote>mysql</quote>.  Then
			use: make install include_modules=<quote>mysql</quote>. To install only the
			modules: make install-modules include_modules=<quote>mysql</quote> or only
			the mysql module: make install-modules modules=modules/mysql.
		    </simpara>
		</answer>
	    </qandaentry>

	    <qandaentry>
		<question>
		    <simpara>
			Is ser compatible with MySQL 4.x ?
		</simpara>
		</question>
		<answer>
		    <simpara>
			Yes.
		    </simpara>
		</answer>
	    </qandaentry>

	</qandaset>
    </chapter>
</book>