Here, you can find the answers to a few frequently asked questions. For up to date Help, Faq, Bug Reporting have a look here: http://sourceforge.net/projects/chan-sccp-b/support.

A. Compilation

Compilation related issues.

A1. How to Compile

Q: How to Compile chan_sccp-b

A: We are using the standard autoconf/automake principle. This means the only thing you have to do to compile your application is run:

 ./configure
 ./make
 ./make install

To get everything install using the default values. It will try and determine all the relevant dependecies and compile the application. If you need any specific functionality, or need to specify a location of for example your asterisk installatin you can use "\code./configure --help\endcode" to figure out the switches you need. To Read more about using ./configure, read the INSTALL document in the root of this project directory.

A2. Compilation Errors

Q: How to solve compilations errors

A: First try to work out what ./configure is complaining about, when it is. I normally tries to be as explicit as possible. If you get errors trying to start configure, first try to resolve it using "\code./reconf\endcode", it will try and build a new configure application for your machine (autoconf, automake and m4 are required).

If nothing helps, send a message to our bug page via http://sourceforge.net/tracker/?group_id=186378&atid=917045. Please include config.log when sending a bug about configure/make

Q: How to solve compilations errors

A: First try to work out what ./configure is complaining about, when it is. I normally tries to be as explicit as possible. If you get errors trying to start configure, first try to resolve it

B. Troubleshooting

Q. Can't dial-in or dial-out of an SCCP Phone

A. Check the context which has been set in the sccp.conf or realtime tables. Please make sure you have a corresponding context in your dialplan (extensions.conf / extenstions.ael). You can also change the sccp.conf context(s) to a context you already use in your dialplan (like default / from-internal-users).

Q. No audio when calling or being called

A. Normally this comes down to the need for in-direct rtp traffic, because there is a firewall between your phones which is performing Network Address Translations (NAT). You can check this via: http://www.amibehindnat.com. Simple solution: Turn directrtp=off in you sccp.conf or realtime tables and try again.

Also check your settings for sccp.conf: externip and localnet In rtp.conf you can make the block of used rtp port smaller and forward this whole block of UDP ports to your asterisk box.

Read more here: Troubles using VOIP and SCCP through a Firewall (NAT) Troubles using VOIP and SCCP through a Firewall (NAT)

Q. No DMTF at all

A. Set directrtp=off in your sccp.conf or realtime tables and give it another try. You can also specify the type of DTMF used per device with dtmfmode=inband/outofband (inband can be heard, out-of-band is rfc2833 and can not be heard). to use inband you will also need earlyrtp=on to be able to use DTMF in IVR's for example.

Q. No DMTF during calls

A. Set earlyrtp=on or ringout in your sccp.conf or realtime tables and try again, this will make it possible for inband DTMF tones to be received and heard starting at call progress

Q. How do i report an Issue or Problem i have

A. You can find detailed information about reporting problems/issues here: Reporting Issues/Problems. Please do set you debug levels according to the issue you have. Otherwise we have to wade through piles of uninformative messages to get to the correct location. And try to describe you issue as exact as possible.

C. Dialplan

Q: How do you dial an SCCP from your dialplan

A: Use a dial statement like this

 Dial(SCCP/998,120)

Q: How to Dial an SCCP Phone with a different ring

A: Added ringer=inside to the dial statement

 Dial(SCCP/198/ringer=inside,120)

 ringer= values:
   - outside
   - inside
   - feature
   - silent
   - urgent
   .

Q: Dial a line and have the phone Auto Answer (Used for Paging for example)

A: add the following to your dial statement to page lines 9291 and 9292 with one way audio

 Dial(SCCP/9291/aa=1w&SCCP/9292/aa=1w, 120)

aa= values:

1w: 1way audio (MIC on other side is OFF).
2w: 2way audio (MIC on other side is ON).
1wb: 1way and reject cause: busy
1wu: 1way and reject cause: unavailable
1wc: 1way and reject cause: congestion
2wb: 2way and reject cause: busy
2wu: 2way and reject cause: unavailable
2wc: 2way and reject cause: congestion

Q: Get infomation about the SCCP device or line from the dialplan.

A: use the SCCPDEVICE, SCCPLINE and SCCPCHANNEL functions.

example:

 Set(my_ip=${SCCPDEVICE(current,ip)});

to set the variable my_ip to the ip-address of the current device.

example:

 Set(some_ip=${SCCPDEVICE(SEP001B54CA6543,cidname)});

to set the variable some_ip to the cidname of the device with Mac-Address 00:1B:54:CA:65:43.

see How to use dialplan functions How to use dialplan functions

How to to use Hints

Q: How to use Hints

A: To use a hinted speeddial you will also need an hint entry in your dialplan, which could look like:

extension.conf:

 [hints]
        exten => 101,hint,SCCP/101
        exten => 102,hint,SCCP/102
        exten => 103,hint,SCCP/103
        exten => 104,hint,SCCP/104
        exten => 105,hint,SCCP/105
      exten => 200,hint,SCCP/101&SCCP/102               // Secretaties

or

extension.ael (in AEL2 format):

 context hints {
      hint(SCCP/101) _101 => NoOp(hint);
      hint(SCCP/102) _102 => NoOp(hint);
      hint(SCCP/103) _103 => NoOp(hint);
      hint(SCCP/104) _104 => NoOp(hint);
      hint(SCCP/105) _105 => NoOp(hint);
      hint(SCCP/101&SCCP/102) _200 => NoOp(hint);
 };

Once these hints have been configured you can use them in a speedial entry in your sccp.conf like:

 button = speeddial, "Secretaries", 200, 200@hints