Hi, Thanks for your helpful replies.
However I didn't get answer for my last question. Do J Series routers have asynchronous interfaces on which one can connect a dialup modem for backup? Best regards, Sami. -----Message d'origine----- De : damien holloway [mailto:[EMAIL PROTECTED] Envoyé : mercredi 12 mars 2008 00:46 À : Andrew Mulheirn Cc : Sami Ghourabi; [email protected] Objet : Re: [j-nsp] Question about E1 interfaces in J2300 serial interfaces as per on a Cisco router. Be aware that even though the cisco cables fit the serial ports on the Juniper they are not compatible, ie do not work... On Wed, Mar 12, 2008 at 12:05 AM, Andrew Mulheirn <[EMAIL PROTECTED]> wrote: Hi Sami - 1. Yes, they support G.703 and G.704. 2. The dual-port E1 PIM has RJ-48 interfaces. The dual-port channelized E1/T1 has RJ48 as well. The dual-port synchronous serial has high-density serial interfaces as per on a Cisco router. For this module you need an external CSU/DSU 3. I would have thought that any RJ-48 to BNC balun would work. It needs to change the impedance from 120 ohm to 75 ohm - it doesn't do anything to the framing, so the following balun would work: http://www.blackbox.co.uk/solutions/display.asp?cs=dvh&id=1&doc=mt242a-m I think that's what we used. Even though it says it is a G.703 balun it should do G.704 as well. Cheers, A. ________________________________________ From: [EMAIL PROTECTED] [EMAIL PROTECTED] On Behalf Of Sami Ghourabi [EMAIL PROTECTED] Sent: 11 March 2008 15:44 To: [email protected] Subject: [j-nsp] Question about E1 interfaces in J2300 Hi list, I'm somewhat new to routing and Juniper Networks routers, so please tolerate my ignorance. I have some question about the fixed E1 interfaces in J2300 routers. 1. These interfaces are fractional interfaces supporting G703 and G704 protocols, am I right? 2. What is the connector type of these interfaces? I know that channelized E1 on Juniper have J48-S connectors, but I'am not sure about fixed fractional interfaces connector type for J series. 3. Are there E1 dual BNC balanced cables supported by these interfaces? As far as I know, Juniper doesn't provide this kind of cables. Did anyone used this kind of cables and which brand would are know to be compatible with Juniper routers ? Another question not related to E1 interfaces. Do J routers have any type of interfaces that can work in synchronous and asynchronous mode, not simultaneously of course. Thanks for your reply. Best regards. Sami. _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp -- Regards Damien _______________________ Damien Holloway +852 6793 0450 mobile +612 8003 5371 skype in +852 2986 5400 hong kong home _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
