# Problems implementing H323 with Asterisk 1.4.22 **URL:** \ **Category:** Asterisk Support\ **Created:** [December 16, 2008, 8:05pm UTC](https://community.asterisk.org/t/problems-implementing-h323-with-asterisk-1-4-22/24626 "2008-12-16T20:05:32Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![elkabong33](https://avatars.discourse-cdn.com/v4/letter/e/7cd45c/32.png) [@elkabong33](https://community.asterisk.org/u/elkabong33)\ **Post date:** [December 16, 2008, 8:05pm UTC](https://community.asterisk.org/t/problems-implementing-h323-with-asterisk-1-4-22/24626/1 "2008-12-16T20:05:32Z")
Hello, I am trying to get H323 support working in Asterisk but I am stuck. The channel is installed: ## [quote]c1213s02\*CLI\> core show channeltypes Type Description Devicestate Indications Transfer ---------- ----------- ----------- ----------- -------- Local Local Proxy Channel Driver yes yes no Agent Call Agent Proxy Channel yes yes no Phone Standard Linux Telephony API Driver no yes no MGCP Media Gateway Control Protocol (MGCP) yes yes no Console OSS Console Channel Driver no yes no Zap DAHDI Telephony Driver no yes no OOH323 Objective Systems H323 Channel Driver no yes no Skinny Skinny Client Control Protocol (Skinny) no yes no SIP Session Initiation Protocol (SIP) yes yes yes IAX2 Inter Asterisk eXchange Driver (Ver 2) yes yes yes 10 channel drivers registered.[/quote] However, when I tried making a call from a SIP Device I am getting this error: [quote] [Dec 16 09:47:17] WARNING[22104]: channel.c:3051 ast\_request: No channel type registered for ‘H323’ [Dec 16 09:47:17] WARNING[22104]: app\_dial.c:1242 dial\_exec\_full: Unable to create channel of type ‘H323’ (cause 66 - Channel not implemented)[/quote] Any ideas? Thanks a lot Ekabong ---
**Author:** ![elkabong33](https://avatars.discourse-cdn.com/v4/letter/e/7cd45c/32.png) [@elkabong33](https://community.asterisk.org/u/elkabong33)\ **Post date:** [December 17, 2008, 5:07pm UTC](https://community.asterisk.org/t/problems-implementing-h323-with-asterisk-1-4-22/24626/2 "2008-12-17T17:07:48Z")
_bump_ Please don’t leave me hanging! ---
**Author:** ![mbruni](https://avatars.discourse-cdn.com/v4/letter/m/ecccb3/32.png) [@mbruni](https://community.asterisk.org/u/mbruni)\ **Post date:** [December 17, 2008, 5:24pm UTC](https://community.asterisk.org/t/problems-implementing-h323-with-asterisk-1-4-22/24626/3 "2008-12-17T17:24:17Z")
Perhaps the channel type name is OOH323 instead of H323 ? Cheers. Marco Bruni ---
**Author:** ![elkabong33](https://avatars.discourse-cdn.com/v4/letter/e/7cd45c/32.png) [@elkabong33](https://community.asterisk.org/u/elkabong33)\ **Post date:** [December 17, 2008, 5:39pm UTC](https://community.asterisk.org/t/problems-implementing-h323-with-asterisk-1-4-22/24626/4 "2008-12-17T17:39:39Z")
[quote=“mbruni”]Perhaps the channel type name is OOH323 instead of H323 ? Cheers. Marco Bruni[/quote] Thanks for that at least it got me thinking because I am using A2Billing and in the Trunk setting it was asking to put either SIP, IAX or H323 and I just put H323 instead of OOH323. I forgot that they are 3 different flavours of H323. Thanks again.