홈 네트워크 구성하기

우리집에서는 쓰는 홈 네트워크의 구성도입니다. 단일의 유선공유기(ipTIME T3008)에 모든 장치들 연결해 놓았습니다. 고정적인 연결이 필요한 HTPC, NAS, 프린터 등은 유선으로 연결하고 스마트폰, 태블릿 등은 무선 AP(ipTIME Extender-GIGA)로 연결해서 사용하도록 구성하였습니다.

1. ipTIME T3008

ipTIME T3008은 8포트짜리 유선공유기입니다. 출시된지 상당히 오래된 공유기임에도 불구하고 몇 달 동안 재부팅하지 않아도 될 만큼 준수하고 안정적인 성능을 보여주고 있습니다. 우리집에서는 아래 사진과 같이 CISCO SPA112와 함께 단자함에 넣어서 쓰고 있습니다.

우리집은 LG U+ 인터넷망과 TVG를 쓰기 때문에, LG에서 가입시 설치하는 공유기(U+ WiFi100, 모델명: CAPL-6000) 대신 사설 공유기를 쓰기 위해서는 다음의 2가지에 유의해야 합니다.

  • LG에서 주는 공유기의 맥 주소(MAC Address)로 ipTime T3008 공유기의 맥 주소를 설정해야 합니다. 192.168.219.1로 접속하면 관리자 페이지로 들어가면 맥 주소를 볼 수 있습니다. 자세한 내용은 여기, https://m.blog.naver.com/telland/220716670746를 참고하십시오. LG U+ 인터넷은 맥 주소로 공유기를 인식하는 것 같으므로, 이렇게 사설 공유기의 맥 주소를 바꿔줘야 인터넷이 안정적으로 연결됩니다.

  • TVG를 쓰기 위해서는 이에 맞는 IPTV 설정을 해줘야 합니다. 공유기 설정 페이지로 접속해서 특수기능으로 들어가면 설정할 수 있습니다. “사설IP주소를 사용하는 IPTV (IGMP Proxy) – SKB, LGU+”를 설정하면 됩니다.

그리고 필요에 따라 IPTIME에서 제공하는 유동 DNS(DDNS: Dynamic DNS) + 포트포워드 기능을 조합하면 외부에서도 편리하게 집안의 NAS 등에 접속하게 만들 수 있습니다.

단자함 내부

2. ipTIME Extender-GIGA

ipTIME Extender-GIGA는 최근에서 출시된 무선 공유기 확장기입니다. 공유기 커버리지를 확장하기 위해 쓰이지만, 저렴한 AP 역할도 할 수 있습니다. 위의 T3008이 주된 역할(주소 변환 NAT, IP 할당 등)을 하고 AP는 단순히 무선 WIFI 신호로 바꾸어 주는 역할을 합니다. 전용 AP는 가격이 상당하지만, 이러한 저렴한 Exterder류를 활용해서도 동일한 기능을 하도록 할 수 있습니다. 특히, Extender-GIGA는 유선 연결이 1,000Mbps로 내부망을 기가빗으로 구성할 수 있습니다.

우리집 홈네트워크에서는 아래 사진과 같이 거실 전원에 설치해 놨습니다.

3. CISCO SPA112

CISCO SPA112는 일명 ATA(Analog Telephone Adapter)입니다. 우리나라에서는 070으로 시작하는 인터넷 전화(VoIP)를 일반 전화로 바꾸어 주는 역할을 합니다. 이 장치에 VoIP 계정 정보를 설정해 놓고 인터넷에 연결해 놓으면 일반 전화기로 전화가 가능합니다. 출시된지 상당히 오래되었지만, 안정적인 성능을 보여주고 있습니다. 현재 아마존에서 30~40불 정도에 판매하고 있습니다.

CISCO SPA112를 사용하려면 VoIP 계정 정보를 주는 인터넷 전화 사업자에게 신청해야 합니다. 우리나라에서는 삼성SDS의 Wyz070이 유일하고, 이 삼성와이즈070 대리점에서만 SIP 계정을 발급 해주고 있습니다. 이렇게 ATA류를 설치해서 집전화로 인터넷 전화를 사용하면 몇가지 장점이 있습니다.

  • 기본요금이 매우 저렴합니다. 월 1,100원대로, 일반 KT 유선전화의 5,000원대 보다 월등하게 저렴합니다.

  • SPA112와 같은 ATA를 사용하면 아파트에서 활용도가 높습니다. 우리 아파트의 경우 아파트 월패드에서 전화를 걸고 받을 수 있고, 부엌과 화장실에서는 걸려온 전화를 받을 수 있도록 되어 있습니다. ATA를 활용하면 인터넷 전화도 ATA를 통해 집안의 전화망과 연결하여 일반 유선전화처럼 월패드, 부엌, 화장실에서 쓸 수 있습니다.

  • 마지막으로 SIP 계정만 있으면 이를 스마트폰에 심어서 인터넷 전화로 쓸 수 있습니다. 예를 들어 해외 여행을 가서 데이터 유심을 장착한 경우, SIPDROID 같은 인터넷 전화앱을 활용해서 국내로 저렴하게 유선 전화를 걸 수 있습니다.

대리점에서 발급받은 SIP 정보는 간단한데요, 전화번호가 되는 ID와 비밀번호, 그리고 Proxy 서버 주소를 받게 됩니다. 이 정보를 아래와 같이 심어주면 됩니다. 그리고 가장 중요한 것이 Dial Plan을 설정해야 합니다. 아마존에서 산 CISCO SPA112에는 미국에서 사용할 수 있도록 Dial Plan이 설정되어 있었는데요, 한국에서 사용하려면 Dial Plan을 (<:02>[2-9]xxxxxxx.|0[3-6][1-5][2-9]xxxxxxS0|xx.|*xx.|**xx.|#xx.)로 설정해야 합니다.

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