excellent! worked fine here. call went through. but i am getting different warnings in terminal. for example
Yate engine is initialized and starting up on Nokia-N900
<openssl:WARN> Certificate verify error 20: UNABLE_TO_GET_ISSUER_CERT_LOCALLY [0xa70d8]

<yrtp:WARN> Initial timeout in channel sip/2 wrapper [0x41002758]
<yrtp:WARN> Initial timeout in channel jingle/2 wrapper [0x1733a8]
<WARN> RTP received SEQ 358 while current is 359 [0x1734c0]

and also following warning during initialisation of yate

<WARN> Failed to save config file '/usr/etc/yate/snmp_data.conf' (13: Permission denied)
<snmpagent:WARN> Could not bind SNMP UDP Listener, error 13 Permission denied

but calls are getting through with voice on both sides. will do some more testing tomorrow for cpu usage and call quality.