Upgrading from Asterisk 1.4 to 1.8 [Optware]

I would appreciate actionable guidance from senior members: I think that I have posed the correct question, however, I am open to suggestions.

Question: What files do I need to remove to completely remove Asterisk 1.4?

Background: I have attempted to upgrade from 1.4 to 1.8 on an ASUS RT-N16. I am getting conflicting information as to which version is running (though I tend to think it is 1.4):

[code]root@athomehost:/# asterisk -v
Asterisk 1.4.22.1, Copyright © 1999 - 2008 Digium, Inc. and others.

root@athomehost:/# ipkg-opt list_installed | grep asterisk
asterisk18 - 1.8.4-1 - Asterisk is an Open Source PBX and telephony toolkit. [/code]

This is the log of my attempt to upgrade. Note the failure to remove 1.4:

[code]root@athomehost:/# service
Service: named (/opt/etc/init.d/S09named) disabled
Service: xinetd (/opt/etc/init.d/S10xinetd)
Service: automount (/opt/etc/init.d/S35automount)
Service: reloc_syslog (/opt/etc/init.d/S40relocate_syslog)
Service: pixelserv (/opt/etc/init.d/S45pixelserv)
Service: soundmodules (/opt/etc/init.d/S45soundmodules)
Service: portmap (/opt/etc/init.d/S55portmap)
Service: unfsd (/opt/etc/init.d/S56unfsd)
Service: zabbix (/opt/etc/init.d/S70zabbix) disabled
Service: lighttpd (/opt/etc/init.d/S80lighttpd) disabled
Service: pound (/opt/etc/init.d/S80pound) disabled
Service: samba (/opt/etc/init.d/S80samba)
Service: vlighttpd (/opt/etc/init.d/S80vlighttpd) disabled
Service: kaid (/opt/etc/init.d/S85kaid)
Service: asterisk (/opt/etc/init.d/S90asterisk)
Service: nzbget (/opt/etc/init.d/S90nzbget) disabled
Service: transmission (/opt/etc/init.d/S90transmission) disabled
Service: fixtables (/opt/etc/init.d/S94fixtables)
Service: stophammer (/opt/etc/init.d/S94stophammer)
Service: asiablock (/opt/etc/init.d/S95asiablock) disabled
Service: birmablock (/opt/etc/init.d/S95birmablock) disabled
Service: twonky (/opt/etc/init.d/S95twonky) disabled
Service: watchprinter (/opt/etc/init.d/S95watchprinter)
Service: worldblock (/opt/etc/init.d/S95worldblock) disabled
Service: siproxd (/opt/etc/init.d/S98siproxd) disabled
Service: stophack (/opt/etc/init.d/S98stophack)
root@athomehost:/# service service asterisk stop
Service “service” does not exist
root@athomehost:/# service asterisk stop
Stopping asterisk
root@athomehost:/# service asterisk off
Disable service “asterisk” (/opt/etc/init.d/S90asterisk)
service: Disabled service: “asterisk” (/opt/etc/init.d/S90asterisk)
root@athomehost:/# ipkg-opt remove asterisk14
No packages removed.
Nothing to be done
Successfully terminated.

root@athomehost:/# ipkg-opt install asterisk18
Installing asterisk18 (1.8.3.2-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/asterisk18_1.8.3.2-1_mipsel.ipk
Nothing to be done
An error ocurred, return value: 22.
Collected errors:
ipkg_download: ERROR: Command failed with return value 8: `wget -q -P /opt/ipkg-UEAPK9 http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/asterisk18_1.8.3.2-1_mipsel.ipk
Failed to download asterisk18. Perhaps you need to run ‘ipkg update’?
root@athomehost:/#

root@athomehost:/# ipkg update
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/Packages
Updated list of available packages in /opt/lib/ipkg/lists/unslung
Successfully terminated.

root@athomehost:/# ipkg-opt install asterisk18
Installing asterisk18 (1.8.4-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/asterisk18_1.8.4-1_mipsel.ipk
package asterisk18 suggests installing asterisk14-core-sounds-en-alaw
package asterisk18 suggests installing asterisk14-core-sounds-en-g729
package asterisk18 suggests installing asterisk14-core-sounds-en-gsm
package asterisk18 suggests installing asterisk14-core-sounds-en-ulaw
package asterisk18 suggests installing asterisk14-extra-sounds-en-alaw
package asterisk18 suggests installing asterisk14-extra-sounds-en-g729
package asterisk18 suggests installing asterisk14-extra-sounds-en-gsm
package asterisk18 suggests installing asterisk14-extra-sounds-en-ulaw
package asterisk18 suggests installing asterisk14-moh-opsound-alaw
package asterisk18 suggests installing asterisk14-moh-opsound-g729
package asterisk18 suggests installing asterisk14-moh-opsound-gsm
package asterisk18 suggests installing asterisk14-moh-opsound-ulaw
package asterisk18 suggests installing libogg
package asterisk18 suggests installing net-snmp
package asterisk18 suggests installing radiusclient-ng
package asterisk18 suggests installing sqlite2
package asterisk18 suggests installing unixodbc
package asterisk18 suggests installing iksemel
package asterisk18 suggests installing x11
Installing openssl (0.9.7m-5) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/openssl_0.9.7m-5_mipsel.ipk
Installing ncurses (5.7-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/ncurses_5.7-1_mipsel.ipk
Installing libcurl (7.21.6-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/libcurl_7.21.6-1_mipsel.ipk
Installing zlib (1.2.5-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/zlib_1.2.5-1_mipsel.ipk
Installing termcap (1.3.1-2) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/termcap_1.3.1-2_mipsel.ipk
Installing libuclibc++ (0.2.2-9) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/libuclibc++_0.2.2-9_mipsel.ipk
Installing popt (1.16-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/popt_1.16-1_mipsel.ipk
Installing libxml2 (2.7.8-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/libxml2_2.7.8-1_mipsel.ipk
Configuring asterisk18
Configuring libcurl
Configuring libuclibc++
Configuring libxml2
Configuring ncurses
update-alternatives: Linking //opt/bin/clear to /opt/bin/ncurses-clear
Configuring openssl
Configuring popt
Configuring termcap
Configuring zlib
Successfully terminated.

root@athomehost:/# ipkg-opt install iksemel
Installing iksemel (1.4-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/iksemel_1.4-1_mipsel.ipk
Installing gnutls (2.6.5-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/gnutls_2.6.5-1_mipsel.ipk
Installing libtasn1 (2.9-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/libtasn1_2.9-1_mipsel.ipk
Installing libgcrypt (1.4.6-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/libgcrypt_1.4.6-1_mipsel.ipk
Installing libgpg-error (1.10-1) to root…
Downloading http://ipkg.nslu2-linux.org/feeds/optware/ddwrt/cross/stable/libgpg-error_1.10-1_mipsel.ipk
Configuring gnutls
Configuring iksemel
Configuring libgcrypt
Configuring libgpg-error
Configuring libtasn1
Successfully terminated.
root@athomehost:/#[/code]

I think that forward path is to remove the 1.4 files and ensure that 1.8 files are installed and running. This should harmonize the two first CLI commands to 1.8. I would appreciate constructive and actionable guidance from senior members. Thank you.