UC520 Registration to Gatekeepter

Has anyone tried to register a UC520 to Gatekeeper? I'm having trouble getting the UC520 to register. Below are may gateway and gatekeeper configs and the debug h225 asn1 from the gateway. Gateway voice service voip qsig decode allow-connections h323 to h323 allow-connections h323 to sip allow-connections sip to h323 allow-connections sip to sip supplementary-service h450.12 h323 h225 listen-port 1820 no call service stop sip bind control source-interface Vlan20 bind media source-interface Vlan20 registrar server expires max 600 min 60 ! interface Vlan20 description voice ip address 172.21.2.1 255.255.255.0 h323-gateway voip interface h323-gateway voip id ZONE-CME ipaddr 172.21.1.4 1719 h323-gateway voip h323-id GW-CME h323-gateway voip tech-prefix 8 gateway dial-peer voice 2100 voip destination-pattern 7... session target ras Gatekeepter gatekeeper zone local Gatekeeper msi-uclab-local zone subnet Gatekeeper 172.21.2.0/24 enable zone prefix Gatekeeper 4... gw-priority 5 GW-CME zone prefix Gatekeeper 7... gw-priority 5 gk-trunk_1 no shutdown littlesalt2811(config)#do debu ras H.323 RAS Messages debugging is on littlesalt2811(config)# littlesalt2811(config)# littlesalt2811(config)# littlesalt2811(config)# Sep 29 12:18:49.971: RecvUDP_IPSockData successfully rcvd message of length 70 from 172.21.2.1:59522 Sep 29 12:18:49.975: GRQ (seq# 2212) rcvd Sep 29 12:18:49.975: IPSOCK_RAS_sendto: msg length 12 from 172.21.1.4:1719 to 172.21.2.1: 59522 Sep 29 12:18:49.975: RASLib::RASSendGRJ: GRJ (seq# 2212) sent to 172.21.2.1 littlesaltUC520#show gateway H.323 ITU-T Version: 4.0 H323 Stack Version: 0.1 H.323 service is up Gateway GW-CME is not registered to any gatekeeper Alias list (CLI configured) H323-ID GW-CME E164-ID 3001 Alias list (last RCF) is empty littlesaltUC520#debug h225 asn1 H.225 ASN1 Messages debugging is on littlesaltUC520# littlesaltUC520#term mon littlesaltUC520# Sep 29 18:17:54.654: RAS OUTGOING PDU ::= value RasMessage ::= gatekeeperRequest : { requestSeqNum 2215 protocolIdentifier { 0 0 8 2250 0 4 } rasAddress ipAddress : { ip 'AC150201'H port 59522 } endpointType { vendor { vendor { t35CountryCode 181 t35Extension 0 manufacturerCode 18 } } gateway { protocol { voice : { supportedPrefixes { { prefix dialedDigits : "8" } } } } } mc FALSE undefinedNode FALSE } gatekeeperIdentifier {"ZONE-CME"} endpointAlias { h323-ID : {"GW-CME"}, dialedDigits : "3001" } } Sep 29 18:17:54.654: RAS OUTGOING ENCODE BUFFER::= 00A008A6060008914A000400AC150201E8822800B500001240013C0504010000B00380005A004F004E0045002D0043004D004502400500470057002D0043004D004501806334 Sep 29 18:17:54.654: Sep 29 18:17:54.658: RAS INCOMING ENCODE BUFFER::= 080008A6060008914A000420 Sep 29 18:17:54.658: Sep 29 18:17:54.658: RAS INCOMING PDU ::= value RasMessage ::= gatekeeperReject : { requestSeqNum 2215 protocolIdentifier { 0 0 8 2250 0 4 } rejectReason terminalExcluded : NULL