Asterisk: Fix the issue that the called number is truncated if it is longer than or equal to 8 digits

This workardound is not needed any more since evoice development and test have been
stopped.
Furthermore, endptmngr will be replaced as voicemngr.

Asterisk: Change the type of sessionID in CDR from int to unsigned int to match the type used in pjsip

Asterisk: Set farEndIPAddress in CallLog with media connection address other than origin address in SDP

asterisk: Set registration expiration correctly if there are multiple Contact headers in 200 OK to REGISTER

asterisk: Set CallLog.{i}.X_{EXAMPLE-COM}_SIPIPAddress to the proxy address other than the local WAN IP

"uk"   - the default config which support flash-hook (R) only triggering call waiting and 3-way conference.
         R4 and R5 are for attended and unattended call transfer respectively with a timer.
"etsi" - Using R0, R1, R2, to trigger different ways of handling call waiting. R3 for 3-way conference.
         R4 and R5 are for attended and unattended call transfer respectively without a timer.

asterisk: Respond 486 instead of 603 for an incoming call if FXS is busy and no DECT handset available

68ff57bc42 Fix some regressions caused by unattended call transfer
2d1b11cb72 Use correct URI schema in Referred-By and Refer-To header fields in call transfer

The bug happened on a newer version of busybox.