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1. Segmentation Errors. Sometimes when “./skypegw” runs, there are segmentation errors. This has to do with “glibc” problems. Have not been successful in isolating the causes. There is a program that can be used to remove this irritation. It is not provided here as there are licensing issues. More information about this program can be found here.

2. No audio sounds when a SIP client calls a Skype user via the gateway. Though “qjackctrl” may show proper audio connections, there is no sound or only one way sound is heard. This has something to do with network configurations resulting in strange SIP protocol errors. This scenario is represented as follows:

Sip Client (sip:103@192.168.1.99) ->

Gateway As Sip Server (sip:elephant@192.168.1.98)->

Skype (elephant)

This problem can be resolved by routing your call to the Sip Client server first. For example if the Sip Client is connected to Asterisk, then do the following:

Sip Client (sip:103@192.168.1.99) ->

Asterisk (sip:elephant@192.168.1.99) (Act As Intermediary)->

Gateway As Sip Server (sip:elephant@192.168.1.98)->

Skype (elephant)

3. Gateway cannot access audio hardware. This is caused by some programs running prior to gateway running. Kill these programs. As an example, asterisk may cause such a problem. For this, terminate asterisk first, run the gateway then restart asterisk.

4. Skype does not create a Jackd readable Clients/Output Port. With repeated calling, Skype sometimes fail to create a Jackd readable clients/output port. This causes call failure. The only way to fix this is to “kill” Skype. The next version will monitor such situations and do reboot of the program. Version 1.1 does this better.

5. Some hardware may present problem for this gateway. It appears the problem has to do with Skype. This bug has been reported under https://developer.skype.com/jira/browse/SCL-120. Until this is fixed by Skype, the gateway cannot perform properly.

This entry was posted on Monday, October 22nd, 2007 at 1:25 am and is filed under Skype Sip Gateway - PE. You can follow responses to this entry through the Comments RSS Feed. You can leave a response or trackback from your site.